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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / emulex / benet / be_main.c
1 /*
2 * Copyright (C) 2005 - 2015 Emulex
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Contact Information:
11 * linux-drivers@emulex.com
12 *
13 * Emulex
14 * 3333 Susan Street
15 * Costa Mesa, CA 92626
16 */
17
18 #include <linux/prefetch.h>
19 #include <linux/module.h>
20 #include "be.h"
21 #include "be_cmds.h"
22 #include <asm/div64.h>
23 #include <linux/aer.h>
24 #include <linux/if_bridge.h>
25 #include <net/busy_poll.h>
26 #include <net/vxlan.h>
27
28 MODULE_VERSION(DRV_VER);
29 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
30 MODULE_AUTHOR("Emulex Corporation");
31 MODULE_LICENSE("GPL");
32
33 /* num_vfs module param is obsolete.
34 * Use sysfs method to enable/disable VFs.
35 */
36 static unsigned int num_vfs;
37 module_param(num_vfs, uint, S_IRUGO);
38 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
39
40 static ushort rx_frag_size = 2048;
41 module_param(rx_frag_size, ushort, S_IRUGO);
42 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
43
44 static const struct pci_device_id be_dev_ids[] = {
45 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
46 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
47 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
48 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
49 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
50 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
51 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
52 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
53 { 0 }
54 };
55 MODULE_DEVICE_TABLE(pci, be_dev_ids);
56 /* UE Status Low CSR */
57 static const char * const ue_status_low_desc[] = {
58 "CEV",
59 "CTX",
60 "DBUF",
61 "ERX",
62 "Host",
63 "MPU",
64 "NDMA",
65 "PTC ",
66 "RDMA ",
67 "RXF ",
68 "RXIPS ",
69 "RXULP0 ",
70 "RXULP1 ",
71 "RXULP2 ",
72 "TIM ",
73 "TPOST ",
74 "TPRE ",
75 "TXIPS ",
76 "TXULP0 ",
77 "TXULP1 ",
78 "UC ",
79 "WDMA ",
80 "TXULP2 ",
81 "HOST1 ",
82 "P0_OB_LINK ",
83 "P1_OB_LINK ",
84 "HOST_GPIO ",
85 "MBOX ",
86 "ERX2 ",
87 "SPARE ",
88 "JTAG ",
89 "MPU_INTPEND "
90 };
91
92 /* UE Status High CSR */
93 static const char * const ue_status_hi_desc[] = {
94 "LPCMEMHOST",
95 "MGMT_MAC",
96 "PCS0ONLINE",
97 "MPU_IRAM",
98 "PCS1ONLINE",
99 "PCTL0",
100 "PCTL1",
101 "PMEM",
102 "RR",
103 "TXPB",
104 "RXPP",
105 "XAUI",
106 "TXP",
107 "ARM",
108 "IPC",
109 "HOST2",
110 "HOST3",
111 "HOST4",
112 "HOST5",
113 "HOST6",
114 "HOST7",
115 "ECRC",
116 "Poison TLP",
117 "NETC",
118 "PERIPH",
119 "LLTXULP",
120 "D2P",
121 "RCON",
122 "LDMA",
123 "LLTXP",
124 "LLTXPB",
125 "Unknown"
126 };
127
128 #define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
129 BE_IF_FLAGS_BROADCAST | \
130 BE_IF_FLAGS_MULTICAST | \
131 BE_IF_FLAGS_PASS_L3L4_ERRORS)
132
133 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
134 {
135 struct be_dma_mem *mem = &q->dma_mem;
136
137 if (mem->va) {
138 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
139 mem->dma);
140 mem->va = NULL;
141 }
142 }
143
144 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
145 u16 len, u16 entry_size)
146 {
147 struct be_dma_mem *mem = &q->dma_mem;
148
149 memset(q, 0, sizeof(*q));
150 q->len = len;
151 q->entry_size = entry_size;
152 mem->size = len * entry_size;
153 mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
154 GFP_KERNEL);
155 if (!mem->va)
156 return -ENOMEM;
157 return 0;
158 }
159
160 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
161 {
162 u32 reg, enabled;
163
164 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
165 &reg);
166 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
167
168 if (!enabled && enable)
169 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
170 else if (enabled && !enable)
171 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
172 else
173 return;
174
175 pci_write_config_dword(adapter->pdev,
176 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
177 }
178
179 static void be_intr_set(struct be_adapter *adapter, bool enable)
180 {
181 int status = 0;
182
183 /* On lancer interrupts can't be controlled via this register */
184 if (lancer_chip(adapter))
185 return;
186
187 if (be_check_error(adapter, BE_ERROR_EEH))
188 return;
189
190 status = be_cmd_intr_set(adapter, enable);
191 if (status)
192 be_reg_intr_set(adapter, enable);
193 }
194
195 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
196 {
197 u32 val = 0;
198
199 if (be_check_error(adapter, BE_ERROR_HW))
200 return;
201
202 val |= qid & DB_RQ_RING_ID_MASK;
203 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
204
205 wmb();
206 iowrite32(val, adapter->db + DB_RQ_OFFSET);
207 }
208
209 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
210 u16 posted)
211 {
212 u32 val = 0;
213
214 if (be_check_error(adapter, BE_ERROR_HW))
215 return;
216
217 val |= txo->q.id & DB_TXULP_RING_ID_MASK;
218 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
219
220 wmb();
221 iowrite32(val, adapter->db + txo->db_offset);
222 }
223
224 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
225 bool arm, bool clear_int, u16 num_popped,
226 u32 eq_delay_mult_enc)
227 {
228 u32 val = 0;
229
230 val |= qid & DB_EQ_RING_ID_MASK;
231 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
232
233 if (be_check_error(adapter, BE_ERROR_HW))
234 return;
235
236 if (arm)
237 val |= 1 << DB_EQ_REARM_SHIFT;
238 if (clear_int)
239 val |= 1 << DB_EQ_CLR_SHIFT;
240 val |= 1 << DB_EQ_EVNT_SHIFT;
241 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
242 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
243 iowrite32(val, adapter->db + DB_EQ_OFFSET);
244 }
245
246 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
247 {
248 u32 val = 0;
249
250 val |= qid & DB_CQ_RING_ID_MASK;
251 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
252 DB_CQ_RING_ID_EXT_MASK_SHIFT);
253
254 if (be_check_error(adapter, BE_ERROR_HW))
255 return;
256
257 if (arm)
258 val |= 1 << DB_CQ_REARM_SHIFT;
259 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
260 iowrite32(val, adapter->db + DB_CQ_OFFSET);
261 }
262
263 static int be_mac_addr_set(struct net_device *netdev, void *p)
264 {
265 struct be_adapter *adapter = netdev_priv(netdev);
266 struct device *dev = &adapter->pdev->dev;
267 struct sockaddr *addr = p;
268 int status;
269 u8 mac[ETH_ALEN];
270 u32 old_pmac_id = adapter->pmac_id[0], curr_pmac_id = 0;
271
272 if (!is_valid_ether_addr(addr->sa_data))
273 return -EADDRNOTAVAIL;
274
275 /* Proceed further only if, User provided MAC is different
276 * from active MAC
277 */
278 if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
279 return 0;
280
281 /* if device is not running, copy MAC to netdev->dev_addr */
282 if (!netif_running(netdev))
283 goto done;
284
285 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
286 * privilege or if PF did not provision the new MAC address.
287 * On BE3, this cmd will always fail if the VF doesn't have the
288 * FILTMGMT privilege. This failure is OK, only if the PF programmed
289 * the MAC for the VF.
290 */
291 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
292 adapter->if_handle, &adapter->pmac_id[0], 0);
293 if (!status) {
294 curr_pmac_id = adapter->pmac_id[0];
295
296 /* Delete the old programmed MAC. This call may fail if the
297 * old MAC was already deleted by the PF driver.
298 */
299 if (adapter->pmac_id[0] != old_pmac_id)
300 be_cmd_pmac_del(adapter, adapter->if_handle,
301 old_pmac_id, 0);
302 }
303
304 /* Decide if the new MAC is successfully activated only after
305 * querying the FW
306 */
307 status = be_cmd_get_active_mac(adapter, curr_pmac_id, mac,
308 adapter->if_handle, true, 0);
309 if (status)
310 goto err;
311
312 /* The MAC change did not happen, either due to lack of privilege
313 * or PF didn't pre-provision.
314 */
315 if (!ether_addr_equal(addr->sa_data, mac)) {
316 status = -EPERM;
317 goto err;
318 }
319 done:
320 ether_addr_copy(netdev->dev_addr, addr->sa_data);
321 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
322 return 0;
323 err:
324 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
325 return status;
326 }
327
328 /* BE2 supports only v0 cmd */
329 static void *hw_stats_from_cmd(struct be_adapter *adapter)
330 {
331 if (BE2_chip(adapter)) {
332 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
333
334 return &cmd->hw_stats;
335 } else if (BE3_chip(adapter)) {
336 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
337
338 return &cmd->hw_stats;
339 } else {
340 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
341
342 return &cmd->hw_stats;
343 }
344 }
345
346 /* BE2 supports only v0 cmd */
347 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
348 {
349 if (BE2_chip(adapter)) {
350 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
351
352 return &hw_stats->erx;
353 } else if (BE3_chip(adapter)) {
354 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
355
356 return &hw_stats->erx;
357 } else {
358 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
359
360 return &hw_stats->erx;
361 }
362 }
363
364 static void populate_be_v0_stats(struct be_adapter *adapter)
365 {
366 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
367 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
368 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
369 struct be_port_rxf_stats_v0 *port_stats =
370 &rxf_stats->port[adapter->port_num];
371 struct be_drv_stats *drvs = &adapter->drv_stats;
372
373 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
374 drvs->rx_pause_frames = port_stats->rx_pause_frames;
375 drvs->rx_crc_errors = port_stats->rx_crc_errors;
376 drvs->rx_control_frames = port_stats->rx_control_frames;
377 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
378 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
379 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
380 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
381 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
382 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
383 drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
384 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
385 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
386 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
387 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
388 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
389 drvs->rx_dropped_header_too_small =
390 port_stats->rx_dropped_header_too_small;
391 drvs->rx_address_filtered =
392 port_stats->rx_address_filtered +
393 port_stats->rx_vlan_filtered;
394 drvs->rx_alignment_symbol_errors =
395 port_stats->rx_alignment_symbol_errors;
396
397 drvs->tx_pauseframes = port_stats->tx_pauseframes;
398 drvs->tx_controlframes = port_stats->tx_controlframes;
399
400 if (adapter->port_num)
401 drvs->jabber_events = rxf_stats->port1_jabber_events;
402 else
403 drvs->jabber_events = rxf_stats->port0_jabber_events;
404 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
405 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
406 drvs->forwarded_packets = rxf_stats->forwarded_packets;
407 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
408 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
409 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
410 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
411 }
412
413 static void populate_be_v1_stats(struct be_adapter *adapter)
414 {
415 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
416 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
417 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
418 struct be_port_rxf_stats_v1 *port_stats =
419 &rxf_stats->port[adapter->port_num];
420 struct be_drv_stats *drvs = &adapter->drv_stats;
421
422 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
423 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
424 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
425 drvs->rx_pause_frames = port_stats->rx_pause_frames;
426 drvs->rx_crc_errors = port_stats->rx_crc_errors;
427 drvs->rx_control_frames = port_stats->rx_control_frames;
428 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
429 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
430 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
431 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
432 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
433 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
434 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
435 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
436 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
437 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
438 drvs->rx_dropped_header_too_small =
439 port_stats->rx_dropped_header_too_small;
440 drvs->rx_input_fifo_overflow_drop =
441 port_stats->rx_input_fifo_overflow_drop;
442 drvs->rx_address_filtered = port_stats->rx_address_filtered;
443 drvs->rx_alignment_symbol_errors =
444 port_stats->rx_alignment_symbol_errors;
445 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
446 drvs->tx_pauseframes = port_stats->tx_pauseframes;
447 drvs->tx_controlframes = port_stats->tx_controlframes;
448 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
449 drvs->jabber_events = port_stats->jabber_events;
450 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
451 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
452 drvs->forwarded_packets = rxf_stats->forwarded_packets;
453 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
454 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
455 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
456 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
457 }
458
459 static void populate_be_v2_stats(struct be_adapter *adapter)
460 {
461 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
462 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
463 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
464 struct be_port_rxf_stats_v2 *port_stats =
465 &rxf_stats->port[adapter->port_num];
466 struct be_drv_stats *drvs = &adapter->drv_stats;
467
468 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
469 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
470 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
471 drvs->rx_pause_frames = port_stats->rx_pause_frames;
472 drvs->rx_crc_errors = port_stats->rx_crc_errors;
473 drvs->rx_control_frames = port_stats->rx_control_frames;
474 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
475 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
476 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
477 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
478 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
479 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
480 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
481 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
482 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
483 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
484 drvs->rx_dropped_header_too_small =
485 port_stats->rx_dropped_header_too_small;
486 drvs->rx_input_fifo_overflow_drop =
487 port_stats->rx_input_fifo_overflow_drop;
488 drvs->rx_address_filtered = port_stats->rx_address_filtered;
489 drvs->rx_alignment_symbol_errors =
490 port_stats->rx_alignment_symbol_errors;
491 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
492 drvs->tx_pauseframes = port_stats->tx_pauseframes;
493 drvs->tx_controlframes = port_stats->tx_controlframes;
494 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
495 drvs->jabber_events = port_stats->jabber_events;
496 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
497 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
498 drvs->forwarded_packets = rxf_stats->forwarded_packets;
499 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
500 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
501 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
502 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
503 if (be_roce_supported(adapter)) {
504 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
505 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
506 drvs->rx_roce_frames = port_stats->roce_frames_received;
507 drvs->roce_drops_crc = port_stats->roce_drops_crc;
508 drvs->roce_drops_payload_len =
509 port_stats->roce_drops_payload_len;
510 }
511 }
512
513 static void populate_lancer_stats(struct be_adapter *adapter)
514 {
515 struct be_drv_stats *drvs = &adapter->drv_stats;
516 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
517
518 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
519 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
520 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
521 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
522 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
523 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
524 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
525 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
526 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
527 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
528 drvs->rx_dropped_tcp_length =
529 pport_stats->rx_dropped_invalid_tcp_length;
530 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
531 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
532 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
533 drvs->rx_dropped_header_too_small =
534 pport_stats->rx_dropped_header_too_small;
535 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
536 drvs->rx_address_filtered =
537 pport_stats->rx_address_filtered +
538 pport_stats->rx_vlan_filtered;
539 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
540 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
541 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
542 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
543 drvs->jabber_events = pport_stats->rx_jabbers;
544 drvs->forwarded_packets = pport_stats->num_forwards_lo;
545 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
546 drvs->rx_drops_too_many_frags =
547 pport_stats->rx_drops_too_many_frags_lo;
548 }
549
550 static void accumulate_16bit_val(u32 *acc, u16 val)
551 {
552 #define lo(x) (x & 0xFFFF)
553 #define hi(x) (x & 0xFFFF0000)
554 bool wrapped = val < lo(*acc);
555 u32 newacc = hi(*acc) + val;
556
557 if (wrapped)
558 newacc += 65536;
559 ACCESS_ONCE(*acc) = newacc;
560 }
561
562 static void populate_erx_stats(struct be_adapter *adapter,
563 struct be_rx_obj *rxo, u32 erx_stat)
564 {
565 if (!BEx_chip(adapter))
566 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
567 else
568 /* below erx HW counter can actually wrap around after
569 * 65535. Driver accumulates a 32-bit value
570 */
571 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
572 (u16)erx_stat);
573 }
574
575 void be_parse_stats(struct be_adapter *adapter)
576 {
577 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
578 struct be_rx_obj *rxo;
579 int i;
580 u32 erx_stat;
581
582 if (lancer_chip(adapter)) {
583 populate_lancer_stats(adapter);
584 } else {
585 if (BE2_chip(adapter))
586 populate_be_v0_stats(adapter);
587 else if (BE3_chip(adapter))
588 /* for BE3 */
589 populate_be_v1_stats(adapter);
590 else
591 populate_be_v2_stats(adapter);
592
593 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
594 for_all_rx_queues(adapter, rxo, i) {
595 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
596 populate_erx_stats(adapter, rxo, erx_stat);
597 }
598 }
599 }
600
601 static struct rtnl_link_stats64 *be_get_stats64(struct net_device *netdev,
602 struct rtnl_link_stats64 *stats)
603 {
604 struct be_adapter *adapter = netdev_priv(netdev);
605 struct be_drv_stats *drvs = &adapter->drv_stats;
606 struct be_rx_obj *rxo;
607 struct be_tx_obj *txo;
608 u64 pkts, bytes;
609 unsigned int start;
610 int i;
611
612 for_all_rx_queues(adapter, rxo, i) {
613 const struct be_rx_stats *rx_stats = rx_stats(rxo);
614
615 do {
616 start = u64_stats_fetch_begin_irq(&rx_stats->sync);
617 pkts = rx_stats(rxo)->rx_pkts;
618 bytes = rx_stats(rxo)->rx_bytes;
619 } while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
620 stats->rx_packets += pkts;
621 stats->rx_bytes += bytes;
622 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
623 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
624 rx_stats(rxo)->rx_drops_no_frags;
625 }
626
627 for_all_tx_queues(adapter, txo, i) {
628 const struct be_tx_stats *tx_stats = tx_stats(txo);
629
630 do {
631 start = u64_stats_fetch_begin_irq(&tx_stats->sync);
632 pkts = tx_stats(txo)->tx_pkts;
633 bytes = tx_stats(txo)->tx_bytes;
634 } while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
635 stats->tx_packets += pkts;
636 stats->tx_bytes += bytes;
637 }
638
639 /* bad pkts received */
640 stats->rx_errors = drvs->rx_crc_errors +
641 drvs->rx_alignment_symbol_errors +
642 drvs->rx_in_range_errors +
643 drvs->rx_out_range_errors +
644 drvs->rx_frame_too_long +
645 drvs->rx_dropped_too_small +
646 drvs->rx_dropped_too_short +
647 drvs->rx_dropped_header_too_small +
648 drvs->rx_dropped_tcp_length +
649 drvs->rx_dropped_runt;
650
651 /* detailed rx errors */
652 stats->rx_length_errors = drvs->rx_in_range_errors +
653 drvs->rx_out_range_errors +
654 drvs->rx_frame_too_long;
655
656 stats->rx_crc_errors = drvs->rx_crc_errors;
657
658 /* frame alignment errors */
659 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
660
661 /* receiver fifo overrun */
662 /* drops_no_pbuf is no per i/f, it's per BE card */
663 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
664 drvs->rx_input_fifo_overflow_drop +
665 drvs->rx_drops_no_pbuf;
666 return stats;
667 }
668
669 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
670 {
671 struct net_device *netdev = adapter->netdev;
672
673 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
674 netif_carrier_off(netdev);
675 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
676 }
677
678 if (link_status)
679 netif_carrier_on(netdev);
680 else
681 netif_carrier_off(netdev);
682
683 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
684 }
685
686 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
687 {
688 struct be_tx_stats *stats = tx_stats(txo);
689 u64 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
690
691 u64_stats_update_begin(&stats->sync);
692 stats->tx_reqs++;
693 stats->tx_bytes += skb->len;
694 stats->tx_pkts += tx_pkts;
695 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
696 stats->tx_vxlan_offload_pkts += tx_pkts;
697 u64_stats_update_end(&stats->sync);
698 }
699
700 /* Returns number of WRBs needed for the skb */
701 static u32 skb_wrb_cnt(struct sk_buff *skb)
702 {
703 /* +1 for the header wrb */
704 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
705 }
706
707 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
708 {
709 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
710 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
711 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
712 wrb->rsvd0 = 0;
713 }
714
715 /* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
716 * to avoid the swap and shift/mask operations in wrb_fill().
717 */
718 static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
719 {
720 wrb->frag_pa_hi = 0;
721 wrb->frag_pa_lo = 0;
722 wrb->frag_len = 0;
723 wrb->rsvd0 = 0;
724 }
725
726 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
727 struct sk_buff *skb)
728 {
729 u8 vlan_prio;
730 u16 vlan_tag;
731
732 vlan_tag = skb_vlan_tag_get(skb);
733 vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
734 /* If vlan priority provided by OS is NOT in available bmap */
735 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
736 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
737 adapter->recommended_prio_bits;
738
739 return vlan_tag;
740 }
741
742 /* Used only for IP tunnel packets */
743 static u16 skb_inner_ip_proto(struct sk_buff *skb)
744 {
745 return (inner_ip_hdr(skb)->version == 4) ?
746 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
747 }
748
749 static u16 skb_ip_proto(struct sk_buff *skb)
750 {
751 return (ip_hdr(skb)->version == 4) ?
752 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
753 }
754
755 static inline bool be_is_txq_full(struct be_tx_obj *txo)
756 {
757 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
758 }
759
760 static inline bool be_can_txq_wake(struct be_tx_obj *txo)
761 {
762 return atomic_read(&txo->q.used) < txo->q.len / 2;
763 }
764
765 static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
766 {
767 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
768 }
769
770 static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
771 struct sk_buff *skb,
772 struct be_wrb_params *wrb_params)
773 {
774 u16 proto;
775
776 if (skb_is_gso(skb)) {
777 BE_WRB_F_SET(wrb_params->features, LSO, 1);
778 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
779 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
780 BE_WRB_F_SET(wrb_params->features, LSO6, 1);
781 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
782 if (skb->encapsulation) {
783 BE_WRB_F_SET(wrb_params->features, IPCS, 1);
784 proto = skb_inner_ip_proto(skb);
785 } else {
786 proto = skb_ip_proto(skb);
787 }
788 if (proto == IPPROTO_TCP)
789 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
790 else if (proto == IPPROTO_UDP)
791 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
792 }
793
794 if (skb_vlan_tag_present(skb)) {
795 BE_WRB_F_SET(wrb_params->features, VLAN, 1);
796 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
797 }
798
799 BE_WRB_F_SET(wrb_params->features, CRC, 1);
800 }
801
802 static void wrb_fill_hdr(struct be_adapter *adapter,
803 struct be_eth_hdr_wrb *hdr,
804 struct be_wrb_params *wrb_params,
805 struct sk_buff *skb)
806 {
807 memset(hdr, 0, sizeof(*hdr));
808
809 SET_TX_WRB_HDR_BITS(crc, hdr,
810 BE_WRB_F_GET(wrb_params->features, CRC));
811 SET_TX_WRB_HDR_BITS(ipcs, hdr,
812 BE_WRB_F_GET(wrb_params->features, IPCS));
813 SET_TX_WRB_HDR_BITS(tcpcs, hdr,
814 BE_WRB_F_GET(wrb_params->features, TCPCS));
815 SET_TX_WRB_HDR_BITS(udpcs, hdr,
816 BE_WRB_F_GET(wrb_params->features, UDPCS));
817
818 SET_TX_WRB_HDR_BITS(lso, hdr,
819 BE_WRB_F_GET(wrb_params->features, LSO));
820 SET_TX_WRB_HDR_BITS(lso6, hdr,
821 BE_WRB_F_GET(wrb_params->features, LSO6));
822 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
823
824 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
825 * hack is not needed, the evt bit is set while ringing DB.
826 */
827 SET_TX_WRB_HDR_BITS(event, hdr,
828 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
829 SET_TX_WRB_HDR_BITS(vlan, hdr,
830 BE_WRB_F_GET(wrb_params->features, VLAN));
831 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
832
833 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
834 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
835 SET_TX_WRB_HDR_BITS(mgmt, hdr,
836 BE_WRB_F_GET(wrb_params->features, OS2BMC));
837 }
838
839 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
840 bool unmap_single)
841 {
842 dma_addr_t dma;
843 u32 frag_len = le32_to_cpu(wrb->frag_len);
844
845
846 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
847 (u64)le32_to_cpu(wrb->frag_pa_lo);
848 if (frag_len) {
849 if (unmap_single)
850 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
851 else
852 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
853 }
854 }
855
856 /* Grab a WRB header for xmit */
857 static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
858 {
859 u32 head = txo->q.head;
860
861 queue_head_inc(&txo->q);
862 return head;
863 }
864
865 /* Set up the WRB header for xmit */
866 static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
867 struct be_tx_obj *txo,
868 struct be_wrb_params *wrb_params,
869 struct sk_buff *skb, u16 head)
870 {
871 u32 num_frags = skb_wrb_cnt(skb);
872 struct be_queue_info *txq = &txo->q;
873 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
874
875 wrb_fill_hdr(adapter, hdr, wrb_params, skb);
876 be_dws_cpu_to_le(hdr, sizeof(*hdr));
877
878 BUG_ON(txo->sent_skb_list[head]);
879 txo->sent_skb_list[head] = skb;
880 txo->last_req_hdr = head;
881 atomic_add(num_frags, &txq->used);
882 txo->last_req_wrb_cnt = num_frags;
883 txo->pend_wrb_cnt += num_frags;
884 }
885
886 /* Setup a WRB fragment (buffer descriptor) for xmit */
887 static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
888 int len)
889 {
890 struct be_eth_wrb *wrb;
891 struct be_queue_info *txq = &txo->q;
892
893 wrb = queue_head_node(txq);
894 wrb_fill(wrb, busaddr, len);
895 queue_head_inc(txq);
896 }
897
898 /* Bring the queue back to the state it was in before be_xmit_enqueue() routine
899 * was invoked. The producer index is restored to the previous packet and the
900 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
901 */
902 static void be_xmit_restore(struct be_adapter *adapter,
903 struct be_tx_obj *txo, u32 head, bool map_single,
904 u32 copied)
905 {
906 struct device *dev;
907 struct be_eth_wrb *wrb;
908 struct be_queue_info *txq = &txo->q;
909
910 dev = &adapter->pdev->dev;
911 txq->head = head;
912
913 /* skip the first wrb (hdr); it's not mapped */
914 queue_head_inc(txq);
915 while (copied) {
916 wrb = queue_head_node(txq);
917 unmap_tx_frag(dev, wrb, map_single);
918 map_single = false;
919 copied -= le32_to_cpu(wrb->frag_len);
920 queue_head_inc(txq);
921 }
922
923 txq->head = head;
924 }
925
926 /* Enqueue the given packet for transmit. This routine allocates WRBs for the
927 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
928 * of WRBs used up by the packet.
929 */
930 static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
931 struct sk_buff *skb,
932 struct be_wrb_params *wrb_params)
933 {
934 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
935 struct device *dev = &adapter->pdev->dev;
936 struct be_queue_info *txq = &txo->q;
937 bool map_single = false;
938 u32 head = txq->head;
939 dma_addr_t busaddr;
940 int len;
941
942 head = be_tx_get_wrb_hdr(txo);
943
944 if (skb->len > skb->data_len) {
945 len = skb_headlen(skb);
946
947 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
948 if (dma_mapping_error(dev, busaddr))
949 goto dma_err;
950 map_single = true;
951 be_tx_setup_wrb_frag(txo, busaddr, len);
952 copied += len;
953 }
954
955 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
956 const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
957 len = skb_frag_size(frag);
958
959 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
960 if (dma_mapping_error(dev, busaddr))
961 goto dma_err;
962 be_tx_setup_wrb_frag(txo, busaddr, len);
963 copied += len;
964 }
965
966 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
967
968 be_tx_stats_update(txo, skb);
969 return wrb_cnt;
970
971 dma_err:
972 adapter->drv_stats.dma_map_errors++;
973 be_xmit_restore(adapter, txo, head, map_single, copied);
974 return 0;
975 }
976
977 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
978 {
979 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
980 }
981
982 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
983 struct sk_buff *skb,
984 struct be_wrb_params
985 *wrb_params)
986 {
987 u16 vlan_tag = 0;
988
989 skb = skb_share_check(skb, GFP_ATOMIC);
990 if (unlikely(!skb))
991 return skb;
992
993 if (skb_vlan_tag_present(skb))
994 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
995
996 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
997 if (!vlan_tag)
998 vlan_tag = adapter->pvid;
999 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1000 * skip VLAN insertion
1001 */
1002 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1003 }
1004
1005 if (vlan_tag) {
1006 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1007 vlan_tag);
1008 if (unlikely(!skb))
1009 return skb;
1010 skb->vlan_tci = 0;
1011 }
1012
1013 /* Insert the outer VLAN, if any */
1014 if (adapter->qnq_vid) {
1015 vlan_tag = adapter->qnq_vid;
1016 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1017 vlan_tag);
1018 if (unlikely(!skb))
1019 return skb;
1020 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1021 }
1022
1023 return skb;
1024 }
1025
1026 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1027 {
1028 struct ethhdr *eh = (struct ethhdr *)skb->data;
1029 u16 offset = ETH_HLEN;
1030
1031 if (eh->h_proto == htons(ETH_P_IPV6)) {
1032 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1033
1034 offset += sizeof(struct ipv6hdr);
1035 if (ip6h->nexthdr != NEXTHDR_TCP &&
1036 ip6h->nexthdr != NEXTHDR_UDP) {
1037 struct ipv6_opt_hdr *ehdr =
1038 (struct ipv6_opt_hdr *)(skb->data + offset);
1039
1040 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1041 if (ehdr->hdrlen == 0xff)
1042 return true;
1043 }
1044 }
1045 return false;
1046 }
1047
1048 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1049 {
1050 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1051 }
1052
1053 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1054 {
1055 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1056 }
1057
1058 static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1059 struct sk_buff *skb,
1060 struct be_wrb_params
1061 *wrb_params)
1062 {
1063 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
1064 unsigned int eth_hdr_len;
1065 struct iphdr *ip;
1066
1067 /* For padded packets, BE HW modifies tot_len field in IP header
1068 * incorrecly when VLAN tag is inserted by HW.
1069 * For padded packets, Lancer computes incorrect checksum.
1070 */
1071 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1072 VLAN_ETH_HLEN : ETH_HLEN;
1073 if (skb->len <= 60 &&
1074 (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
1075 is_ipv4_pkt(skb)) {
1076 ip = (struct iphdr *)ip_hdr(skb);
1077 pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
1078 }
1079
1080 /* If vlan tag is already inlined in the packet, skip HW VLAN
1081 * tagging in pvid-tagging mode
1082 */
1083 if (be_pvid_tagging_enabled(adapter) &&
1084 veh->h_vlan_proto == htons(ETH_P_8021Q))
1085 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1086
1087 /* HW has a bug wherein it will calculate CSUM for VLAN
1088 * pkts even though it is disabled.
1089 * Manually insert VLAN in pkt.
1090 */
1091 if (skb->ip_summed != CHECKSUM_PARTIAL &&
1092 skb_vlan_tag_present(skb)) {
1093 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1094 if (unlikely(!skb))
1095 goto err;
1096 }
1097
1098 /* HW may lockup when VLAN HW tagging is requested on
1099 * certain ipv6 packets. Drop such pkts if the HW workaround to
1100 * skip HW tagging is not enabled by FW.
1101 */
1102 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
1103 (adapter->pvid || adapter->qnq_vid) &&
1104 !qnq_async_evt_rcvd(adapter)))
1105 goto tx_drop;
1106
1107 /* Manual VLAN tag insertion to prevent:
1108 * ASIC lockup when the ASIC inserts VLAN tag into
1109 * certain ipv6 packets. Insert VLAN tags in driver,
1110 * and set event, completion, vlan bits accordingly
1111 * in the Tx WRB.
1112 */
1113 if (be_ipv6_tx_stall_chk(adapter, skb) &&
1114 be_vlan_tag_tx_chk(adapter, skb)) {
1115 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1116 if (unlikely(!skb))
1117 goto err;
1118 }
1119
1120 return skb;
1121 tx_drop:
1122 dev_kfree_skb_any(skb);
1123 err:
1124 return NULL;
1125 }
1126
1127 static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
1128 struct sk_buff *skb,
1129 struct be_wrb_params *wrb_params)
1130 {
1131 int err;
1132
1133 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein
1134 * packets that are 32b or less may cause a transmit stall
1135 * on that port. The workaround is to pad such packets
1136 * (len <= 32 bytes) to a minimum length of 36b.
1137 */
1138 if (skb->len <= 32) {
1139 if (skb_put_padto(skb, 36))
1140 return NULL;
1141 }
1142
1143 if (BEx_chip(adapter) || lancer_chip(adapter)) {
1144 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);
1145 if (!skb)
1146 return NULL;
1147 }
1148
1149 /* The stack can send us skbs with length greater than
1150 * what the HW can handle. Trim the extra bytes.
1151 */
1152 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);
1153 err = pskb_trim(skb, BE_MAX_GSO_SIZE);
1154 WARN_ON(err);
1155
1156 return skb;
1157 }
1158
1159 static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)
1160 {
1161 struct be_queue_info *txq = &txo->q;
1162 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);
1163
1164 /* Mark the last request eventable if it hasn't been marked already */
1165 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))
1166 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);
1167
1168 /* compose a dummy wrb if there are odd set of wrbs to notify */
1169 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {
1170 wrb_fill_dummy(queue_head_node(txq));
1171 queue_head_inc(txq);
1172 atomic_inc(&txq->used);
1173 txo->pend_wrb_cnt++;
1174 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<
1175 TX_HDR_WRB_NUM_SHIFT);
1176 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<
1177 TX_HDR_WRB_NUM_SHIFT);
1178 }
1179 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);
1180 txo->pend_wrb_cnt = 0;
1181 }
1182
1183 /* OS2BMC related */
1184
1185 #define DHCP_CLIENT_PORT 68
1186 #define DHCP_SERVER_PORT 67
1187 #define NET_BIOS_PORT1 137
1188 #define NET_BIOS_PORT2 138
1189 #define DHCPV6_RAS_PORT 547
1190
1191 #define is_mc_allowed_on_bmc(adapter, eh) \
1192 (!is_multicast_filt_enabled(adapter) && \
1193 is_multicast_ether_addr(eh->h_dest) && \
1194 !is_broadcast_ether_addr(eh->h_dest))
1195
1196 #define is_bc_allowed_on_bmc(adapter, eh) \
1197 (!is_broadcast_filt_enabled(adapter) && \
1198 is_broadcast_ether_addr(eh->h_dest))
1199
1200 #define is_arp_allowed_on_bmc(adapter, skb) \
1201 (is_arp(skb) && is_arp_filt_enabled(adapter))
1202
1203 #define is_broadcast_packet(eh, adapter) \
1204 (is_multicast_ether_addr(eh->h_dest) && \
1205 !compare_ether_addr(eh->h_dest, adapter->netdev->broadcast))
1206
1207 #define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))
1208
1209 #define is_arp_filt_enabled(adapter) \
1210 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))
1211
1212 #define is_dhcp_client_filt_enabled(adapter) \
1213 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)
1214
1215 #define is_dhcp_srvr_filt_enabled(adapter) \
1216 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)
1217
1218 #define is_nbios_filt_enabled(adapter) \
1219 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)
1220
1221 #define is_ipv6_na_filt_enabled(adapter) \
1222 (adapter->bmc_filt_mask & \
1223 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)
1224
1225 #define is_ipv6_ra_filt_enabled(adapter) \
1226 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)
1227
1228 #define is_ipv6_ras_filt_enabled(adapter) \
1229 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)
1230
1231 #define is_broadcast_filt_enabled(adapter) \
1232 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)
1233
1234 #define is_multicast_filt_enabled(adapter) \
1235 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)
1236
1237 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1238 struct sk_buff **skb)
1239 {
1240 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1241 bool os2bmc = false;
1242
1243 if (!be_is_os2bmc_enabled(adapter))
1244 goto done;
1245
1246 if (!is_multicast_ether_addr(eh->h_dest))
1247 goto done;
1248
1249 if (is_mc_allowed_on_bmc(adapter, eh) ||
1250 is_bc_allowed_on_bmc(adapter, eh) ||
1251 is_arp_allowed_on_bmc(adapter, (*skb))) {
1252 os2bmc = true;
1253 goto done;
1254 }
1255
1256 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1257 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1258 u8 nexthdr = hdr->nexthdr;
1259
1260 if (nexthdr == IPPROTO_ICMPV6) {
1261 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1262
1263 switch (icmp6->icmp6_type) {
1264 case NDISC_ROUTER_ADVERTISEMENT:
1265 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1266 goto done;
1267 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1268 os2bmc = is_ipv6_na_filt_enabled(adapter);
1269 goto done;
1270 default:
1271 break;
1272 }
1273 }
1274 }
1275
1276 if (is_udp_pkt((*skb))) {
1277 struct udphdr *udp = udp_hdr((*skb));
1278
1279 switch (ntohs(udp->dest)) {
1280 case DHCP_CLIENT_PORT:
1281 os2bmc = is_dhcp_client_filt_enabled(adapter);
1282 goto done;
1283 case DHCP_SERVER_PORT:
1284 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1285 goto done;
1286 case NET_BIOS_PORT1:
1287 case NET_BIOS_PORT2:
1288 os2bmc = is_nbios_filt_enabled(adapter);
1289 goto done;
1290 case DHCPV6_RAS_PORT:
1291 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1292 goto done;
1293 default:
1294 break;
1295 }
1296 }
1297 done:
1298 /* For packets over a vlan, which are destined
1299 * to BMC, asic expects the vlan to be inline in the packet.
1300 */
1301 if (os2bmc)
1302 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1303
1304 return os2bmc;
1305 }
1306
1307 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1308 {
1309 struct be_adapter *adapter = netdev_priv(netdev);
1310 u16 q_idx = skb_get_queue_mapping(skb);
1311 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1312 struct be_wrb_params wrb_params = { 0 };
1313 bool flush = !skb->xmit_more;
1314 u16 wrb_cnt;
1315
1316 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1317 if (unlikely(!skb))
1318 goto drop;
1319
1320 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1321
1322 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1323 if (unlikely(!wrb_cnt)) {
1324 dev_kfree_skb_any(skb);
1325 goto drop;
1326 }
1327
1328 /* if os2bmc is enabled and if the pkt is destined to bmc,
1329 * enqueue the pkt a 2nd time with mgmt bit set.
1330 */
1331 if (be_send_pkt_to_bmc(adapter, &skb)) {
1332 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1333 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1334 if (unlikely(!wrb_cnt))
1335 goto drop;
1336 else
1337 skb_get(skb);
1338 }
1339
1340 if (be_is_txq_full(txo)) {
1341 netif_stop_subqueue(netdev, q_idx);
1342 tx_stats(txo)->tx_stops++;
1343 }
1344
1345 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1346 be_xmit_flush(adapter, txo);
1347
1348 return NETDEV_TX_OK;
1349 drop:
1350 tx_stats(txo)->tx_drv_drops++;
1351 /* Flush the already enqueued tx requests */
1352 if (flush && txo->pend_wrb_cnt)
1353 be_xmit_flush(adapter, txo);
1354
1355 return NETDEV_TX_OK;
1356 }
1357
1358 static int be_change_mtu(struct net_device *netdev, int new_mtu)
1359 {
1360 struct be_adapter *adapter = netdev_priv(netdev);
1361 struct device *dev = &adapter->pdev->dev;
1362
1363 if (new_mtu < BE_MIN_MTU || new_mtu > BE_MAX_MTU) {
1364 dev_info(dev, "MTU must be between %d and %d bytes\n",
1365 BE_MIN_MTU, BE_MAX_MTU);
1366 return -EINVAL;
1367 }
1368
1369 dev_info(dev, "MTU changed from %d to %d bytes\n",
1370 netdev->mtu, new_mtu);
1371 netdev->mtu = new_mtu;
1372 return 0;
1373 }
1374
1375 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1376 {
1377 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1378 BE_IF_FLAGS_ALL_PROMISCUOUS;
1379 }
1380
1381 static int be_set_vlan_promisc(struct be_adapter *adapter)
1382 {
1383 struct device *dev = &adapter->pdev->dev;
1384 int status;
1385
1386 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1387 return 0;
1388
1389 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1390 if (!status) {
1391 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1392 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1393 } else {
1394 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1395 }
1396 return status;
1397 }
1398
1399 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1400 {
1401 struct device *dev = &adapter->pdev->dev;
1402 int status;
1403
1404 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1405 if (!status) {
1406 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1407 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1408 }
1409 return status;
1410 }
1411
1412 /*
1413 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1414 * If the user configures more, place BE in vlan promiscuous mode.
1415 */
1416 static int be_vid_config(struct be_adapter *adapter)
1417 {
1418 struct device *dev = &adapter->pdev->dev;
1419 u16 vids[BE_NUM_VLANS_SUPPORTED];
1420 u16 num = 0, i = 0;
1421 int status = 0;
1422
1423 /* No need to further configure vids if in promiscuous mode */
1424 if (be_in_all_promisc(adapter))
1425 return 0;
1426
1427 if (adapter->vlans_added > be_max_vlans(adapter))
1428 return be_set_vlan_promisc(adapter);
1429
1430 /* Construct VLAN Table to give to HW */
1431 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1432 vids[num++] = cpu_to_le16(i);
1433
1434 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1435 if (status) {
1436 dev_err(dev, "Setting HW VLAN filtering failed\n");
1437 /* Set to VLAN promisc mode as setting VLAN filter failed */
1438 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1439 addl_status(status) ==
1440 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1441 return be_set_vlan_promisc(adapter);
1442 } else if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1443 status = be_clear_vlan_promisc(adapter);
1444 }
1445 return status;
1446 }
1447
1448 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1449 {
1450 struct be_adapter *adapter = netdev_priv(netdev);
1451 int status = 0;
1452
1453 /* Packets with VID 0 are always received by Lancer by default */
1454 if (lancer_chip(adapter) && vid == 0)
1455 return status;
1456
1457 if (test_bit(vid, adapter->vids))
1458 return status;
1459
1460 set_bit(vid, adapter->vids);
1461 adapter->vlans_added++;
1462
1463 status = be_vid_config(adapter);
1464 if (status) {
1465 adapter->vlans_added--;
1466 clear_bit(vid, adapter->vids);
1467 }
1468
1469 return status;
1470 }
1471
1472 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1473 {
1474 struct be_adapter *adapter = netdev_priv(netdev);
1475
1476 /* Packets with VID 0 are always received by Lancer by default */
1477 if (lancer_chip(adapter) && vid == 0)
1478 return 0;
1479
1480 if (!test_bit(vid, adapter->vids))
1481 return 0;
1482
1483 clear_bit(vid, adapter->vids);
1484 adapter->vlans_added--;
1485
1486 return be_vid_config(adapter);
1487 }
1488
1489 static void be_clear_all_promisc(struct be_adapter *adapter)
1490 {
1491 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, OFF);
1492 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
1493 }
1494
1495 static void be_set_all_promisc(struct be_adapter *adapter)
1496 {
1497 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1498 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1499 }
1500
1501 static void be_set_mc_promisc(struct be_adapter *adapter)
1502 {
1503 int status;
1504
1505 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1506 return;
1507
1508 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1509 if (!status)
1510 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1511 }
1512
1513 static void be_set_mc_list(struct be_adapter *adapter)
1514 {
1515 int status;
1516
1517 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1518 if (!status)
1519 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1520 else
1521 be_set_mc_promisc(adapter);
1522 }
1523
1524 static void be_set_uc_list(struct be_adapter *adapter)
1525 {
1526 struct netdev_hw_addr *ha;
1527 int i = 1; /* First slot is claimed by the Primary MAC */
1528
1529 for (; adapter->uc_macs > 0; adapter->uc_macs--, i++)
1530 be_cmd_pmac_del(adapter, adapter->if_handle,
1531 adapter->pmac_id[i], 0);
1532
1533 if (netdev_uc_count(adapter->netdev) > be_max_uc(adapter)) {
1534 be_set_all_promisc(adapter);
1535 return;
1536 }
1537
1538 netdev_for_each_uc_addr(ha, adapter->netdev) {
1539 adapter->uc_macs++; /* First slot is for Primary MAC */
1540 be_cmd_pmac_add(adapter, (u8 *)ha->addr, adapter->if_handle,
1541 &adapter->pmac_id[adapter->uc_macs], 0);
1542 }
1543 }
1544
1545 static void be_clear_uc_list(struct be_adapter *adapter)
1546 {
1547 int i;
1548
1549 for (i = 1; i < (adapter->uc_macs + 1); i++)
1550 be_cmd_pmac_del(adapter, adapter->if_handle,
1551 adapter->pmac_id[i], 0);
1552 adapter->uc_macs = 0;
1553 }
1554
1555 static void be_set_rx_mode(struct net_device *netdev)
1556 {
1557 struct be_adapter *adapter = netdev_priv(netdev);
1558
1559 if (netdev->flags & IFF_PROMISC) {
1560 be_set_all_promisc(adapter);
1561 return;
1562 }
1563
1564 /* Interface was previously in promiscuous mode; disable it */
1565 if (be_in_all_promisc(adapter)) {
1566 be_clear_all_promisc(adapter);
1567 if (adapter->vlans_added)
1568 be_vid_config(adapter);
1569 }
1570
1571 /* Enable multicast promisc if num configured exceeds what we support */
1572 if (netdev->flags & IFF_ALLMULTI ||
1573 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1574 be_set_mc_promisc(adapter);
1575 return;
1576 }
1577
1578 if (netdev_uc_count(netdev) != adapter->uc_macs)
1579 be_set_uc_list(adapter);
1580
1581 be_set_mc_list(adapter);
1582 }
1583
1584 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1585 {
1586 struct be_adapter *adapter = netdev_priv(netdev);
1587 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1588 int status;
1589
1590 if (!sriov_enabled(adapter))
1591 return -EPERM;
1592
1593 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1594 return -EINVAL;
1595
1596 /* Proceed further only if user provided MAC is different
1597 * from active MAC
1598 */
1599 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1600 return 0;
1601
1602 if (BEx_chip(adapter)) {
1603 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1604 vf + 1);
1605
1606 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1607 &vf_cfg->pmac_id, vf + 1);
1608 } else {
1609 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1610 vf + 1);
1611 }
1612
1613 if (status) {
1614 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1615 mac, vf, status);
1616 return be_cmd_status(status);
1617 }
1618
1619 ether_addr_copy(vf_cfg->mac_addr, mac);
1620
1621 return 0;
1622 }
1623
1624 static int be_get_vf_config(struct net_device *netdev, int vf,
1625 struct ifla_vf_info *vi)
1626 {
1627 struct be_adapter *adapter = netdev_priv(netdev);
1628 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1629
1630 if (!sriov_enabled(adapter))
1631 return -EPERM;
1632
1633 if (vf >= adapter->num_vfs)
1634 return -EINVAL;
1635
1636 vi->vf = vf;
1637 vi->max_tx_rate = vf_cfg->tx_rate;
1638 vi->min_tx_rate = 0;
1639 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1640 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1641 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1642 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1643 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1644
1645 return 0;
1646 }
1647
1648 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1649 {
1650 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1651 u16 vids[BE_NUM_VLANS_SUPPORTED];
1652 int vf_if_id = vf_cfg->if_handle;
1653 int status;
1654
1655 /* Enable Transparent VLAN Tagging */
1656 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1657 if (status)
1658 return status;
1659
1660 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1661 vids[0] = 0;
1662 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1663 if (!status)
1664 dev_info(&adapter->pdev->dev,
1665 "Cleared guest VLANs on VF%d", vf);
1666
1667 /* After TVT is enabled, disallow VFs to program VLAN filters */
1668 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1669 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1670 ~BE_PRIV_FILTMGMT, vf + 1);
1671 if (!status)
1672 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1673 }
1674 return 0;
1675 }
1676
1677 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1678 {
1679 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1680 struct device *dev = &adapter->pdev->dev;
1681 int status;
1682
1683 /* Reset Transparent VLAN Tagging. */
1684 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1685 vf_cfg->if_handle, 0, 0);
1686 if (status)
1687 return status;
1688
1689 /* Allow VFs to program VLAN filtering */
1690 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1691 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1692 BE_PRIV_FILTMGMT, vf + 1);
1693 if (!status) {
1694 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1695 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1696 }
1697 }
1698
1699 dev_info(dev,
1700 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1701 return 0;
1702 }
1703
1704 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1705 {
1706 struct be_adapter *adapter = netdev_priv(netdev);
1707 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1708 int status;
1709
1710 if (!sriov_enabled(adapter))
1711 return -EPERM;
1712
1713 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1714 return -EINVAL;
1715
1716 if (vlan || qos) {
1717 vlan |= qos << VLAN_PRIO_SHIFT;
1718 status = be_set_vf_tvt(adapter, vf, vlan);
1719 } else {
1720 status = be_clear_vf_tvt(adapter, vf);
1721 }
1722
1723 if (status) {
1724 dev_err(&adapter->pdev->dev,
1725 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
1726 status);
1727 return be_cmd_status(status);
1728 }
1729
1730 vf_cfg->vlan_tag = vlan;
1731 return 0;
1732 }
1733
1734 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
1735 int min_tx_rate, int max_tx_rate)
1736 {
1737 struct be_adapter *adapter = netdev_priv(netdev);
1738 struct device *dev = &adapter->pdev->dev;
1739 int percent_rate, status = 0;
1740 u16 link_speed = 0;
1741 u8 link_status;
1742
1743 if (!sriov_enabled(adapter))
1744 return -EPERM;
1745
1746 if (vf >= adapter->num_vfs)
1747 return -EINVAL;
1748
1749 if (min_tx_rate)
1750 return -EINVAL;
1751
1752 if (!max_tx_rate)
1753 goto config_qos;
1754
1755 status = be_cmd_link_status_query(adapter, &link_speed,
1756 &link_status, 0);
1757 if (status)
1758 goto err;
1759
1760 if (!link_status) {
1761 dev_err(dev, "TX-rate setting not allowed when link is down\n");
1762 status = -ENETDOWN;
1763 goto err;
1764 }
1765
1766 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
1767 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
1768 link_speed);
1769 status = -EINVAL;
1770 goto err;
1771 }
1772
1773 /* On Skyhawk the QOS setting must be done only as a % value */
1774 percent_rate = link_speed / 100;
1775 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
1776 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
1777 percent_rate);
1778 status = -EINVAL;
1779 goto err;
1780 }
1781
1782 config_qos:
1783 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
1784 if (status)
1785 goto err;
1786
1787 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
1788 return 0;
1789
1790 err:
1791 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
1792 max_tx_rate, vf);
1793 return be_cmd_status(status);
1794 }
1795
1796 static int be_set_vf_link_state(struct net_device *netdev, int vf,
1797 int link_state)
1798 {
1799 struct be_adapter *adapter = netdev_priv(netdev);
1800 int status;
1801
1802 if (!sriov_enabled(adapter))
1803 return -EPERM;
1804
1805 if (vf >= adapter->num_vfs)
1806 return -EINVAL;
1807
1808 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
1809 if (status) {
1810 dev_err(&adapter->pdev->dev,
1811 "Link state change on VF %d failed: %#x\n", vf, status);
1812 return be_cmd_status(status);
1813 }
1814
1815 adapter->vf_cfg[vf].plink_tracking = link_state;
1816
1817 return 0;
1818 }
1819
1820 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
1821 {
1822 struct be_adapter *adapter = netdev_priv(netdev);
1823 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1824 u8 spoofchk;
1825 int status;
1826
1827 if (!sriov_enabled(adapter))
1828 return -EPERM;
1829
1830 if (vf >= adapter->num_vfs)
1831 return -EINVAL;
1832
1833 if (BEx_chip(adapter))
1834 return -EOPNOTSUPP;
1835
1836 if (enable == vf_cfg->spoofchk)
1837 return 0;
1838
1839 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
1840
1841 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
1842 0, spoofchk);
1843 if (status) {
1844 dev_err(&adapter->pdev->dev,
1845 "Spoofchk change on VF %d failed: %#x\n", vf, status);
1846 return be_cmd_status(status);
1847 }
1848
1849 vf_cfg->spoofchk = enable;
1850 return 0;
1851 }
1852
1853 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
1854 ulong now)
1855 {
1856 aic->rx_pkts_prev = rx_pkts;
1857 aic->tx_reqs_prev = tx_pkts;
1858 aic->jiffies = now;
1859 }
1860
1861 static int be_get_new_eqd(struct be_eq_obj *eqo)
1862 {
1863 struct be_adapter *adapter = eqo->adapter;
1864 int eqd, start;
1865 struct be_aic_obj *aic;
1866 struct be_rx_obj *rxo;
1867 struct be_tx_obj *txo;
1868 u64 rx_pkts = 0, tx_pkts = 0;
1869 ulong now;
1870 u32 pps, delta;
1871 int i;
1872
1873 aic = &adapter->aic_obj[eqo->idx];
1874 if (!aic->enable) {
1875 if (aic->jiffies)
1876 aic->jiffies = 0;
1877 eqd = aic->et_eqd;
1878 return eqd;
1879 }
1880
1881 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
1882 do {
1883 start = u64_stats_fetch_begin_irq(&rxo->stats.sync);
1884 rx_pkts += rxo->stats.rx_pkts;
1885 } while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start));
1886 }
1887
1888 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
1889 do {
1890 start = u64_stats_fetch_begin_irq(&txo->stats.sync);
1891 tx_pkts += txo->stats.tx_reqs;
1892 } while (u64_stats_fetch_retry_irq(&txo->stats.sync, start));
1893 }
1894
1895 /* Skip, if wrapped around or first calculation */
1896 now = jiffies;
1897 if (!aic->jiffies || time_before(now, aic->jiffies) ||
1898 rx_pkts < aic->rx_pkts_prev ||
1899 tx_pkts < aic->tx_reqs_prev) {
1900 be_aic_update(aic, rx_pkts, tx_pkts, now);
1901 return aic->prev_eqd;
1902 }
1903
1904 delta = jiffies_to_msecs(now - aic->jiffies);
1905 if (delta == 0)
1906 return aic->prev_eqd;
1907
1908 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
1909 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
1910 eqd = (pps / 15000) << 2;
1911
1912 if (eqd < 8)
1913 eqd = 0;
1914 eqd = min_t(u32, eqd, aic->max_eqd);
1915 eqd = max_t(u32, eqd, aic->min_eqd);
1916
1917 be_aic_update(aic, rx_pkts, tx_pkts, now);
1918
1919 return eqd;
1920 }
1921
1922 /* For Skyhawk-R only */
1923 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
1924 {
1925 struct be_adapter *adapter = eqo->adapter;
1926 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
1927 ulong now = jiffies;
1928 int eqd;
1929 u32 mult_enc;
1930
1931 if (!aic->enable)
1932 return 0;
1933
1934 if (jiffies_to_msecs(now - aic->jiffies) < 1)
1935 eqd = aic->prev_eqd;
1936 else
1937 eqd = be_get_new_eqd(eqo);
1938
1939 if (eqd > 100)
1940 mult_enc = R2I_DLY_ENC_1;
1941 else if (eqd > 60)
1942 mult_enc = R2I_DLY_ENC_2;
1943 else if (eqd > 20)
1944 mult_enc = R2I_DLY_ENC_3;
1945 else
1946 mult_enc = R2I_DLY_ENC_0;
1947
1948 aic->prev_eqd = eqd;
1949
1950 return mult_enc;
1951 }
1952
1953 void be_eqd_update(struct be_adapter *adapter, bool force_update)
1954 {
1955 struct be_set_eqd set_eqd[MAX_EVT_QS];
1956 struct be_aic_obj *aic;
1957 struct be_eq_obj *eqo;
1958 int i, num = 0, eqd;
1959
1960 for_all_evt_queues(adapter, eqo, i) {
1961 aic = &adapter->aic_obj[eqo->idx];
1962 eqd = be_get_new_eqd(eqo);
1963 if (force_update || eqd != aic->prev_eqd) {
1964 set_eqd[num].delay_multiplier = (eqd * 65)/100;
1965 set_eqd[num].eq_id = eqo->q.id;
1966 aic->prev_eqd = eqd;
1967 num++;
1968 }
1969 }
1970
1971 if (num)
1972 be_cmd_modify_eqd(adapter, set_eqd, num);
1973 }
1974
1975 static void be_rx_stats_update(struct be_rx_obj *rxo,
1976 struct be_rx_compl_info *rxcp)
1977 {
1978 struct be_rx_stats *stats = rx_stats(rxo);
1979
1980 u64_stats_update_begin(&stats->sync);
1981 stats->rx_compl++;
1982 stats->rx_bytes += rxcp->pkt_size;
1983 stats->rx_pkts++;
1984 if (rxcp->tunneled)
1985 stats->rx_vxlan_offload_pkts++;
1986 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
1987 stats->rx_mcast_pkts++;
1988 if (rxcp->err)
1989 stats->rx_compl_err++;
1990 u64_stats_update_end(&stats->sync);
1991 }
1992
1993 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
1994 {
1995 /* L4 checksum is not reliable for non TCP/UDP packets.
1996 * Also ignore ipcksm for ipv6 pkts
1997 */
1998 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
1999 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2000 }
2001
2002 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2003 {
2004 struct be_adapter *adapter = rxo->adapter;
2005 struct be_rx_page_info *rx_page_info;
2006 struct be_queue_info *rxq = &rxo->q;
2007 u32 frag_idx = rxq->tail;
2008
2009 rx_page_info = &rxo->page_info_tbl[frag_idx];
2010 BUG_ON(!rx_page_info->page);
2011
2012 if (rx_page_info->last_frag) {
2013 dma_unmap_page(&adapter->pdev->dev,
2014 dma_unmap_addr(rx_page_info, bus),
2015 adapter->big_page_size, DMA_FROM_DEVICE);
2016 rx_page_info->last_frag = false;
2017 } else {
2018 dma_sync_single_for_cpu(&adapter->pdev->dev,
2019 dma_unmap_addr(rx_page_info, bus),
2020 rx_frag_size, DMA_FROM_DEVICE);
2021 }
2022
2023 queue_tail_inc(rxq);
2024 atomic_dec(&rxq->used);
2025 return rx_page_info;
2026 }
2027
2028 /* Throwaway the data in the Rx completion */
2029 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2030 struct be_rx_compl_info *rxcp)
2031 {
2032 struct be_rx_page_info *page_info;
2033 u16 i, num_rcvd = rxcp->num_rcvd;
2034
2035 for (i = 0; i < num_rcvd; i++) {
2036 page_info = get_rx_page_info(rxo);
2037 put_page(page_info->page);
2038 memset(page_info, 0, sizeof(*page_info));
2039 }
2040 }
2041
2042 /*
2043 * skb_fill_rx_data forms a complete skb for an ether frame
2044 * indicated by rxcp.
2045 */
2046 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2047 struct be_rx_compl_info *rxcp)
2048 {
2049 struct be_rx_page_info *page_info;
2050 u16 i, j;
2051 u16 hdr_len, curr_frag_len, remaining;
2052 u8 *start;
2053
2054 page_info = get_rx_page_info(rxo);
2055 start = page_address(page_info->page) + page_info->page_offset;
2056 prefetch(start);
2057
2058 /* Copy data in the first descriptor of this completion */
2059 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2060
2061 skb->len = curr_frag_len;
2062 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2063 memcpy(skb->data, start, curr_frag_len);
2064 /* Complete packet has now been moved to data */
2065 put_page(page_info->page);
2066 skb->data_len = 0;
2067 skb->tail += curr_frag_len;
2068 } else {
2069 hdr_len = ETH_HLEN;
2070 memcpy(skb->data, start, hdr_len);
2071 skb_shinfo(skb)->nr_frags = 1;
2072 skb_frag_set_page(skb, 0, page_info->page);
2073 skb_shinfo(skb)->frags[0].page_offset =
2074 page_info->page_offset + hdr_len;
2075 skb_frag_size_set(&skb_shinfo(skb)->frags[0],
2076 curr_frag_len - hdr_len);
2077 skb->data_len = curr_frag_len - hdr_len;
2078 skb->truesize += rx_frag_size;
2079 skb->tail += hdr_len;
2080 }
2081 page_info->page = NULL;
2082
2083 if (rxcp->pkt_size <= rx_frag_size) {
2084 BUG_ON(rxcp->num_rcvd != 1);
2085 return;
2086 }
2087
2088 /* More frags present for this completion */
2089 remaining = rxcp->pkt_size - curr_frag_len;
2090 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2091 page_info = get_rx_page_info(rxo);
2092 curr_frag_len = min(remaining, rx_frag_size);
2093
2094 /* Coalesce all frags from the same physical page in one slot */
2095 if (page_info->page_offset == 0) {
2096 /* Fresh page */
2097 j++;
2098 skb_frag_set_page(skb, j, page_info->page);
2099 skb_shinfo(skb)->frags[j].page_offset =
2100 page_info->page_offset;
2101 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2102 skb_shinfo(skb)->nr_frags++;
2103 } else {
2104 put_page(page_info->page);
2105 }
2106
2107 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2108 skb->len += curr_frag_len;
2109 skb->data_len += curr_frag_len;
2110 skb->truesize += rx_frag_size;
2111 remaining -= curr_frag_len;
2112 page_info->page = NULL;
2113 }
2114 BUG_ON(j > MAX_SKB_FRAGS);
2115 }
2116
2117 /* Process the RX completion indicated by rxcp when GRO is disabled */
2118 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2119 struct be_rx_compl_info *rxcp)
2120 {
2121 struct be_adapter *adapter = rxo->adapter;
2122 struct net_device *netdev = adapter->netdev;
2123 struct sk_buff *skb;
2124
2125 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2126 if (unlikely(!skb)) {
2127 rx_stats(rxo)->rx_drops_no_skbs++;
2128 be_rx_compl_discard(rxo, rxcp);
2129 return;
2130 }
2131
2132 skb_fill_rx_data(rxo, skb, rxcp);
2133
2134 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2135 skb->ip_summed = CHECKSUM_UNNECESSARY;
2136 else
2137 skb_checksum_none_assert(skb);
2138
2139 skb->protocol = eth_type_trans(skb, netdev);
2140 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2141 if (netdev->features & NETIF_F_RXHASH)
2142 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2143
2144 skb->csum_level = rxcp->tunneled;
2145 skb_mark_napi_id(skb, napi);
2146
2147 if (rxcp->vlanf)
2148 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2149
2150 netif_receive_skb(skb);
2151 }
2152
2153 /* Process the RX completion indicated by rxcp when GRO is enabled */
2154 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2155 struct napi_struct *napi,
2156 struct be_rx_compl_info *rxcp)
2157 {
2158 struct be_adapter *adapter = rxo->adapter;
2159 struct be_rx_page_info *page_info;
2160 struct sk_buff *skb = NULL;
2161 u16 remaining, curr_frag_len;
2162 u16 i, j;
2163
2164 skb = napi_get_frags(napi);
2165 if (!skb) {
2166 be_rx_compl_discard(rxo, rxcp);
2167 return;
2168 }
2169
2170 remaining = rxcp->pkt_size;
2171 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2172 page_info = get_rx_page_info(rxo);
2173
2174 curr_frag_len = min(remaining, rx_frag_size);
2175
2176 /* Coalesce all frags from the same physical page in one slot */
2177 if (i == 0 || page_info->page_offset == 0) {
2178 /* First frag or Fresh page */
2179 j++;
2180 skb_frag_set_page(skb, j, page_info->page);
2181 skb_shinfo(skb)->frags[j].page_offset =
2182 page_info->page_offset;
2183 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2184 } else {
2185 put_page(page_info->page);
2186 }
2187 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2188 skb->truesize += rx_frag_size;
2189 remaining -= curr_frag_len;
2190 memset(page_info, 0, sizeof(*page_info));
2191 }
2192 BUG_ON(j > MAX_SKB_FRAGS);
2193
2194 skb_shinfo(skb)->nr_frags = j + 1;
2195 skb->len = rxcp->pkt_size;
2196 skb->data_len = rxcp->pkt_size;
2197 skb->ip_summed = CHECKSUM_UNNECESSARY;
2198 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2199 if (adapter->netdev->features & NETIF_F_RXHASH)
2200 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2201
2202 skb->csum_level = rxcp->tunneled;
2203
2204 if (rxcp->vlanf)
2205 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2206
2207 napi_gro_frags(napi);
2208 }
2209
2210 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2211 struct be_rx_compl_info *rxcp)
2212 {
2213 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2214 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2215 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2216 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2217 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2218 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2219 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2220 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2221 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2222 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2223 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2224 if (rxcp->vlanf) {
2225 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2226 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2227 }
2228 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2229 rxcp->tunneled =
2230 GET_RX_COMPL_V1_BITS(tunneled, compl);
2231 }
2232
2233 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2234 struct be_rx_compl_info *rxcp)
2235 {
2236 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2237 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2238 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2239 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2240 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2241 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2242 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2243 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2244 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2245 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2246 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2247 if (rxcp->vlanf) {
2248 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2249 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2250 }
2251 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2252 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2253 }
2254
2255 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2256 {
2257 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2258 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2259 struct be_adapter *adapter = rxo->adapter;
2260
2261 /* For checking the valid bit it is Ok to use either definition as the
2262 * valid bit is at the same position in both v0 and v1 Rx compl */
2263 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2264 return NULL;
2265
2266 rmb();
2267 be_dws_le_to_cpu(compl, sizeof(*compl));
2268
2269 if (adapter->be3_native)
2270 be_parse_rx_compl_v1(compl, rxcp);
2271 else
2272 be_parse_rx_compl_v0(compl, rxcp);
2273
2274 if (rxcp->ip_frag)
2275 rxcp->l4_csum = 0;
2276
2277 if (rxcp->vlanf) {
2278 /* In QNQ modes, if qnq bit is not set, then the packet was
2279 * tagged only with the transparent outer vlan-tag and must
2280 * not be treated as a vlan packet by host
2281 */
2282 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2283 rxcp->vlanf = 0;
2284
2285 if (!lancer_chip(adapter))
2286 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2287
2288 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2289 !test_bit(rxcp->vlan_tag, adapter->vids))
2290 rxcp->vlanf = 0;
2291 }
2292
2293 /* As the compl has been parsed, reset it; we wont touch it again */
2294 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2295
2296 queue_tail_inc(&rxo->cq);
2297 return rxcp;
2298 }
2299
2300 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2301 {
2302 u32 order = get_order(size);
2303
2304 if (order > 0)
2305 gfp |= __GFP_COMP;
2306 return alloc_pages(gfp, order);
2307 }
2308
2309 /*
2310 * Allocate a page, split it to fragments of size rx_frag_size and post as
2311 * receive buffers to BE
2312 */
2313 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2314 {
2315 struct be_adapter *adapter = rxo->adapter;
2316 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2317 struct be_queue_info *rxq = &rxo->q;
2318 struct page *pagep = NULL;
2319 struct device *dev = &adapter->pdev->dev;
2320 struct be_eth_rx_d *rxd;
2321 u64 page_dmaaddr = 0, frag_dmaaddr;
2322 u32 posted, page_offset = 0, notify = 0;
2323
2324 page_info = &rxo->page_info_tbl[rxq->head];
2325 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2326 if (!pagep) {
2327 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2328 if (unlikely(!pagep)) {
2329 rx_stats(rxo)->rx_post_fail++;
2330 break;
2331 }
2332 page_dmaaddr = dma_map_page(dev, pagep, 0,
2333 adapter->big_page_size,
2334 DMA_FROM_DEVICE);
2335 if (dma_mapping_error(dev, page_dmaaddr)) {
2336 put_page(pagep);
2337 pagep = NULL;
2338 adapter->drv_stats.dma_map_errors++;
2339 break;
2340 }
2341 page_offset = 0;
2342 } else {
2343 get_page(pagep);
2344 page_offset += rx_frag_size;
2345 }
2346 page_info->page_offset = page_offset;
2347 page_info->page = pagep;
2348
2349 rxd = queue_head_node(rxq);
2350 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2351 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2352 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2353
2354 /* Any space left in the current big page for another frag? */
2355 if ((page_offset + rx_frag_size + rx_frag_size) >
2356 adapter->big_page_size) {
2357 pagep = NULL;
2358 page_info->last_frag = true;
2359 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2360 } else {
2361 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2362 }
2363
2364 prev_page_info = page_info;
2365 queue_head_inc(rxq);
2366 page_info = &rxo->page_info_tbl[rxq->head];
2367 }
2368
2369 /* Mark the last frag of a page when we break out of the above loop
2370 * with no more slots available in the RXQ
2371 */
2372 if (pagep) {
2373 prev_page_info->last_frag = true;
2374 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2375 }
2376
2377 if (posted) {
2378 atomic_add(posted, &rxq->used);
2379 if (rxo->rx_post_starved)
2380 rxo->rx_post_starved = false;
2381 do {
2382 notify = min(MAX_NUM_POST_ERX_DB, posted);
2383 be_rxq_notify(adapter, rxq->id, notify);
2384 posted -= notify;
2385 } while (posted);
2386 } else if (atomic_read(&rxq->used) == 0) {
2387 /* Let be_worker replenish when memory is available */
2388 rxo->rx_post_starved = true;
2389 }
2390 }
2391
2392 static struct be_tx_compl_info *be_tx_compl_get(struct be_tx_obj *txo)
2393 {
2394 struct be_queue_info *tx_cq = &txo->cq;
2395 struct be_tx_compl_info *txcp = &txo->txcp;
2396 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2397
2398 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2399 return NULL;
2400
2401 /* Ensure load ordering of valid bit dword and other dwords below */
2402 rmb();
2403 be_dws_le_to_cpu(compl, sizeof(*compl));
2404
2405 txcp->status = GET_TX_COMPL_BITS(status, compl);
2406 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2407
2408 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2409 queue_tail_inc(tx_cq);
2410 return txcp;
2411 }
2412
2413 static u16 be_tx_compl_process(struct be_adapter *adapter,
2414 struct be_tx_obj *txo, u16 last_index)
2415 {
2416 struct sk_buff **sent_skbs = txo->sent_skb_list;
2417 struct be_queue_info *txq = &txo->q;
2418 struct sk_buff *skb = NULL;
2419 bool unmap_skb_hdr = false;
2420 struct be_eth_wrb *wrb;
2421 u16 num_wrbs = 0;
2422 u32 frag_index;
2423
2424 do {
2425 if (sent_skbs[txq->tail]) {
2426 /* Free skb from prev req */
2427 if (skb)
2428 dev_consume_skb_any(skb);
2429 skb = sent_skbs[txq->tail];
2430 sent_skbs[txq->tail] = NULL;
2431 queue_tail_inc(txq); /* skip hdr wrb */
2432 num_wrbs++;
2433 unmap_skb_hdr = true;
2434 }
2435 wrb = queue_tail_node(txq);
2436 frag_index = txq->tail;
2437 unmap_tx_frag(&adapter->pdev->dev, wrb,
2438 (unmap_skb_hdr && skb_headlen(skb)));
2439 unmap_skb_hdr = false;
2440 queue_tail_inc(txq);
2441 num_wrbs++;
2442 } while (frag_index != last_index);
2443 dev_consume_skb_any(skb);
2444
2445 return num_wrbs;
2446 }
2447
2448 /* Return the number of events in the event queue */
2449 static inline int events_get(struct be_eq_obj *eqo)
2450 {
2451 struct be_eq_entry *eqe;
2452 int num = 0;
2453
2454 do {
2455 eqe = queue_tail_node(&eqo->q);
2456 if (eqe->evt == 0)
2457 break;
2458
2459 rmb();
2460 eqe->evt = 0;
2461 num++;
2462 queue_tail_inc(&eqo->q);
2463 } while (true);
2464
2465 return num;
2466 }
2467
2468 /* Leaves the EQ is disarmed state */
2469 static void be_eq_clean(struct be_eq_obj *eqo)
2470 {
2471 int num = events_get(eqo);
2472
2473 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2474 }
2475
2476 /* Free posted rx buffers that were not used */
2477 static void be_rxq_clean(struct be_rx_obj *rxo)
2478 {
2479 struct be_queue_info *rxq = &rxo->q;
2480 struct be_rx_page_info *page_info;
2481
2482 while (atomic_read(&rxq->used) > 0) {
2483 page_info = get_rx_page_info(rxo);
2484 put_page(page_info->page);
2485 memset(page_info, 0, sizeof(*page_info));
2486 }
2487 BUG_ON(atomic_read(&rxq->used));
2488 rxq->tail = 0;
2489 rxq->head = 0;
2490 }
2491
2492 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2493 {
2494 struct be_queue_info *rx_cq = &rxo->cq;
2495 struct be_rx_compl_info *rxcp;
2496 struct be_adapter *adapter = rxo->adapter;
2497 int flush_wait = 0;
2498
2499 /* Consume pending rx completions.
2500 * Wait for the flush completion (identified by zero num_rcvd)
2501 * to arrive. Notify CQ even when there are no more CQ entries
2502 * for HW to flush partially coalesced CQ entries.
2503 * In Lancer, there is no need to wait for flush compl.
2504 */
2505 for (;;) {
2506 rxcp = be_rx_compl_get(rxo);
2507 if (!rxcp) {
2508 if (lancer_chip(adapter))
2509 break;
2510
2511 if (flush_wait++ > 50 ||
2512 be_check_error(adapter,
2513 BE_ERROR_HW)) {
2514 dev_warn(&adapter->pdev->dev,
2515 "did not receive flush compl\n");
2516 break;
2517 }
2518 be_cq_notify(adapter, rx_cq->id, true, 0);
2519 mdelay(1);
2520 } else {
2521 be_rx_compl_discard(rxo, rxcp);
2522 be_cq_notify(adapter, rx_cq->id, false, 1);
2523 if (rxcp->num_rcvd == 0)
2524 break;
2525 }
2526 }
2527
2528 /* After cleanup, leave the CQ in unarmed state */
2529 be_cq_notify(adapter, rx_cq->id, false, 0);
2530 }
2531
2532 static void be_tx_compl_clean(struct be_adapter *adapter)
2533 {
2534 struct device *dev = &adapter->pdev->dev;
2535 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2536 struct be_tx_compl_info *txcp;
2537 struct be_queue_info *txq;
2538 u32 end_idx, notified_idx;
2539 struct be_tx_obj *txo;
2540 int i, pending_txqs;
2541
2542 /* Stop polling for compls when HW has been silent for 10ms */
2543 do {
2544 pending_txqs = adapter->num_tx_qs;
2545
2546 for_all_tx_queues(adapter, txo, i) {
2547 cmpl = 0;
2548 num_wrbs = 0;
2549 txq = &txo->q;
2550 while ((txcp = be_tx_compl_get(txo))) {
2551 num_wrbs +=
2552 be_tx_compl_process(adapter, txo,
2553 txcp->end_index);
2554 cmpl++;
2555 }
2556 if (cmpl) {
2557 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2558 atomic_sub(num_wrbs, &txq->used);
2559 timeo = 0;
2560 }
2561 if (!be_is_tx_compl_pending(txo))
2562 pending_txqs--;
2563 }
2564
2565 if (pending_txqs == 0 || ++timeo > 10 ||
2566 be_check_error(adapter, BE_ERROR_HW))
2567 break;
2568
2569 mdelay(1);
2570 } while (true);
2571
2572 /* Free enqueued TX that was never notified to HW */
2573 for_all_tx_queues(adapter, txo, i) {
2574 txq = &txo->q;
2575
2576 if (atomic_read(&txq->used)) {
2577 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2578 i, atomic_read(&txq->used));
2579 notified_idx = txq->tail;
2580 end_idx = txq->tail;
2581 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2582 txq->len);
2583 /* Use the tx-compl process logic to handle requests
2584 * that were not sent to the HW.
2585 */
2586 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2587 atomic_sub(num_wrbs, &txq->used);
2588 BUG_ON(atomic_read(&txq->used));
2589 txo->pend_wrb_cnt = 0;
2590 /* Since hw was never notified of these requests,
2591 * reset TXQ indices
2592 */
2593 txq->head = notified_idx;
2594 txq->tail = notified_idx;
2595 }
2596 }
2597 }
2598
2599 static void be_evt_queues_destroy(struct be_adapter *adapter)
2600 {
2601 struct be_eq_obj *eqo;
2602 int i;
2603
2604 for_all_evt_queues(adapter, eqo, i) {
2605 if (eqo->q.created) {
2606 be_eq_clean(eqo);
2607 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2608 napi_hash_del(&eqo->napi);
2609 netif_napi_del(&eqo->napi);
2610 free_cpumask_var(eqo->affinity_mask);
2611 }
2612 be_queue_free(adapter, &eqo->q);
2613 }
2614 }
2615
2616 static int be_evt_queues_create(struct be_adapter *adapter)
2617 {
2618 struct be_queue_info *eq;
2619 struct be_eq_obj *eqo;
2620 struct be_aic_obj *aic;
2621 int i, rc;
2622
2623 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2624 adapter->cfg_num_qs);
2625
2626 for_all_evt_queues(adapter, eqo, i) {
2627 int numa_node = dev_to_node(&adapter->pdev->dev);
2628
2629 aic = &adapter->aic_obj[i];
2630 eqo->adapter = adapter;
2631 eqo->idx = i;
2632 aic->max_eqd = BE_MAX_EQD;
2633 aic->enable = true;
2634
2635 eq = &eqo->q;
2636 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2637 sizeof(struct be_eq_entry));
2638 if (rc)
2639 return rc;
2640
2641 rc = be_cmd_eq_create(adapter, eqo);
2642 if (rc)
2643 return rc;
2644
2645 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2646 return -ENOMEM;
2647 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2648 eqo->affinity_mask);
2649 netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2650 BE_NAPI_WEIGHT);
2651 }
2652 return 0;
2653 }
2654
2655 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2656 {
2657 struct be_queue_info *q;
2658
2659 q = &adapter->mcc_obj.q;
2660 if (q->created)
2661 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2662 be_queue_free(adapter, q);
2663
2664 q = &adapter->mcc_obj.cq;
2665 if (q->created)
2666 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2667 be_queue_free(adapter, q);
2668 }
2669
2670 /* Must be called only after TX qs are created as MCC shares TX EQ */
2671 static int be_mcc_queues_create(struct be_adapter *adapter)
2672 {
2673 struct be_queue_info *q, *cq;
2674
2675 cq = &adapter->mcc_obj.cq;
2676 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
2677 sizeof(struct be_mcc_compl)))
2678 goto err;
2679
2680 /* Use the default EQ for MCC completions */
2681 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
2682 goto mcc_cq_free;
2683
2684 q = &adapter->mcc_obj.q;
2685 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
2686 goto mcc_cq_destroy;
2687
2688 if (be_cmd_mccq_create(adapter, q, cq))
2689 goto mcc_q_free;
2690
2691 return 0;
2692
2693 mcc_q_free:
2694 be_queue_free(adapter, q);
2695 mcc_cq_destroy:
2696 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
2697 mcc_cq_free:
2698 be_queue_free(adapter, cq);
2699 err:
2700 return -1;
2701 }
2702
2703 static void be_tx_queues_destroy(struct be_adapter *adapter)
2704 {
2705 struct be_queue_info *q;
2706 struct be_tx_obj *txo;
2707 u8 i;
2708
2709 for_all_tx_queues(adapter, txo, i) {
2710 q = &txo->q;
2711 if (q->created)
2712 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
2713 be_queue_free(adapter, q);
2714
2715 q = &txo->cq;
2716 if (q->created)
2717 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2718 be_queue_free(adapter, q);
2719 }
2720 }
2721
2722 static int be_tx_qs_create(struct be_adapter *adapter)
2723 {
2724 struct be_queue_info *cq;
2725 struct be_tx_obj *txo;
2726 struct be_eq_obj *eqo;
2727 int status, i;
2728
2729 adapter->num_tx_qs = min(adapter->num_evt_qs, be_max_txqs(adapter));
2730
2731 for_all_tx_queues(adapter, txo, i) {
2732 cq = &txo->cq;
2733 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
2734 sizeof(struct be_eth_tx_compl));
2735 if (status)
2736 return status;
2737
2738 u64_stats_init(&txo->stats.sync);
2739 u64_stats_init(&txo->stats.sync_compl);
2740
2741 /* If num_evt_qs is less than num_tx_qs, then more than
2742 * one txq share an eq
2743 */
2744 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
2745 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
2746 if (status)
2747 return status;
2748
2749 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
2750 sizeof(struct be_eth_wrb));
2751 if (status)
2752 return status;
2753
2754 status = be_cmd_txq_create(adapter, txo);
2755 if (status)
2756 return status;
2757
2758 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
2759 eqo->idx);
2760 }
2761
2762 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
2763 adapter->num_tx_qs);
2764 return 0;
2765 }
2766
2767 static void be_rx_cqs_destroy(struct be_adapter *adapter)
2768 {
2769 struct be_queue_info *q;
2770 struct be_rx_obj *rxo;
2771 int i;
2772
2773 for_all_rx_queues(adapter, rxo, i) {
2774 q = &rxo->cq;
2775 if (q->created)
2776 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2777 be_queue_free(adapter, q);
2778 }
2779 }
2780
2781 static int be_rx_cqs_create(struct be_adapter *adapter)
2782 {
2783 struct be_queue_info *eq, *cq;
2784 struct be_rx_obj *rxo;
2785 int rc, i;
2786
2787 /* We can create as many RSS rings as there are EQs. */
2788 adapter->num_rss_qs = adapter->num_evt_qs;
2789
2790 /* We'll use RSS only if atleast 2 RSS rings are supported. */
2791 if (adapter->num_rss_qs <= 1)
2792 adapter->num_rss_qs = 0;
2793
2794 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
2795
2796 /* When the interface is not capable of RSS rings (and there is no
2797 * need to create a default RXQ) we'll still need one RXQ
2798 */
2799 if (adapter->num_rx_qs == 0)
2800 adapter->num_rx_qs = 1;
2801
2802 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
2803 for_all_rx_queues(adapter, rxo, i) {
2804 rxo->adapter = adapter;
2805 cq = &rxo->cq;
2806 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
2807 sizeof(struct be_eth_rx_compl));
2808 if (rc)
2809 return rc;
2810
2811 u64_stats_init(&rxo->stats.sync);
2812 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
2813 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
2814 if (rc)
2815 return rc;
2816 }
2817
2818 dev_info(&adapter->pdev->dev,
2819 "created %d RX queue(s)\n", adapter->num_rx_qs);
2820 return 0;
2821 }
2822
2823 static irqreturn_t be_intx(int irq, void *dev)
2824 {
2825 struct be_eq_obj *eqo = dev;
2826 struct be_adapter *adapter = eqo->adapter;
2827 int num_evts = 0;
2828
2829 /* IRQ is not expected when NAPI is scheduled as the EQ
2830 * will not be armed.
2831 * But, this can happen on Lancer INTx where it takes
2832 * a while to de-assert INTx or in BE2 where occasionaly
2833 * an interrupt may be raised even when EQ is unarmed.
2834 * If NAPI is already scheduled, then counting & notifying
2835 * events will orphan them.
2836 */
2837 if (napi_schedule_prep(&eqo->napi)) {
2838 num_evts = events_get(eqo);
2839 __napi_schedule(&eqo->napi);
2840 if (num_evts)
2841 eqo->spurious_intr = 0;
2842 }
2843 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
2844
2845 /* Return IRQ_HANDLED only for the the first spurious intr
2846 * after a valid intr to stop the kernel from branding
2847 * this irq as a bad one!
2848 */
2849 if (num_evts || eqo->spurious_intr++ == 0)
2850 return IRQ_HANDLED;
2851 else
2852 return IRQ_NONE;
2853 }
2854
2855 static irqreturn_t be_msix(int irq, void *dev)
2856 {
2857 struct be_eq_obj *eqo = dev;
2858
2859 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
2860 napi_schedule(&eqo->napi);
2861 return IRQ_HANDLED;
2862 }
2863
2864 static inline bool do_gro(struct be_rx_compl_info *rxcp)
2865 {
2866 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
2867 }
2868
2869 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
2870 int budget, int polling)
2871 {
2872 struct be_adapter *adapter = rxo->adapter;
2873 struct be_queue_info *rx_cq = &rxo->cq;
2874 struct be_rx_compl_info *rxcp;
2875 u32 work_done;
2876 u32 frags_consumed = 0;
2877
2878 for (work_done = 0; work_done < budget; work_done++) {
2879 rxcp = be_rx_compl_get(rxo);
2880 if (!rxcp)
2881 break;
2882
2883 /* Is it a flush compl that has no data */
2884 if (unlikely(rxcp->num_rcvd == 0))
2885 goto loop_continue;
2886
2887 /* Discard compl with partial DMA Lancer B0 */
2888 if (unlikely(!rxcp->pkt_size)) {
2889 be_rx_compl_discard(rxo, rxcp);
2890 goto loop_continue;
2891 }
2892
2893 /* On BE drop pkts that arrive due to imperfect filtering in
2894 * promiscuous mode on some skews
2895 */
2896 if (unlikely(rxcp->port != adapter->port_num &&
2897 !lancer_chip(adapter))) {
2898 be_rx_compl_discard(rxo, rxcp);
2899 goto loop_continue;
2900 }
2901
2902 /* Don't do gro when we're busy_polling */
2903 if (do_gro(rxcp) && polling != BUSY_POLLING)
2904 be_rx_compl_process_gro(rxo, napi, rxcp);
2905 else
2906 be_rx_compl_process(rxo, napi, rxcp);
2907
2908 loop_continue:
2909 frags_consumed += rxcp->num_rcvd;
2910 be_rx_stats_update(rxo, rxcp);
2911 }
2912
2913 if (work_done) {
2914 be_cq_notify(adapter, rx_cq->id, true, work_done);
2915
2916 /* When an rx-obj gets into post_starved state, just
2917 * let be_worker do the posting.
2918 */
2919 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
2920 !rxo->rx_post_starved)
2921 be_post_rx_frags(rxo, GFP_ATOMIC,
2922 max_t(u32, MAX_RX_POST,
2923 frags_consumed));
2924 }
2925
2926 return work_done;
2927 }
2928
2929 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
2930 {
2931 switch (status) {
2932 case BE_TX_COMP_HDR_PARSE_ERR:
2933 tx_stats(txo)->tx_hdr_parse_err++;
2934 break;
2935 case BE_TX_COMP_NDMA_ERR:
2936 tx_stats(txo)->tx_dma_err++;
2937 break;
2938 case BE_TX_COMP_ACL_ERR:
2939 tx_stats(txo)->tx_spoof_check_err++;
2940 break;
2941 }
2942 }
2943
2944 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
2945 {
2946 switch (status) {
2947 case LANCER_TX_COMP_LSO_ERR:
2948 tx_stats(txo)->tx_tso_err++;
2949 break;
2950 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
2951 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
2952 tx_stats(txo)->tx_spoof_check_err++;
2953 break;
2954 case LANCER_TX_COMP_QINQ_ERR:
2955 tx_stats(txo)->tx_qinq_err++;
2956 break;
2957 case LANCER_TX_COMP_PARITY_ERR:
2958 tx_stats(txo)->tx_internal_parity_err++;
2959 break;
2960 case LANCER_TX_COMP_DMA_ERR:
2961 tx_stats(txo)->tx_dma_err++;
2962 break;
2963 }
2964 }
2965
2966 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
2967 int idx)
2968 {
2969 int num_wrbs = 0, work_done = 0;
2970 struct be_tx_compl_info *txcp;
2971
2972 while ((txcp = be_tx_compl_get(txo))) {
2973 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
2974 work_done++;
2975
2976 if (txcp->status) {
2977 if (lancer_chip(adapter))
2978 lancer_update_tx_err(txo, txcp->status);
2979 else
2980 be_update_tx_err(txo, txcp->status);
2981 }
2982 }
2983
2984 if (work_done) {
2985 be_cq_notify(adapter, txo->cq.id, true, work_done);
2986 atomic_sub(num_wrbs, &txo->q.used);
2987
2988 /* As Tx wrbs have been freed up, wake up netdev queue
2989 * if it was stopped due to lack of tx wrbs. */
2990 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
2991 be_can_txq_wake(txo)) {
2992 netif_wake_subqueue(adapter->netdev, idx);
2993 }
2994
2995 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
2996 tx_stats(txo)->tx_compl += work_done;
2997 u64_stats_update_end(&tx_stats(txo)->sync_compl);
2998 }
2999 }
3000
3001 #ifdef CONFIG_NET_RX_BUSY_POLL
3002 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3003 {
3004 bool status = true;
3005
3006 spin_lock(&eqo->lock); /* BH is already disabled */
3007 if (eqo->state & BE_EQ_LOCKED) {
3008 WARN_ON(eqo->state & BE_EQ_NAPI);
3009 eqo->state |= BE_EQ_NAPI_YIELD;
3010 status = false;
3011 } else {
3012 eqo->state = BE_EQ_NAPI;
3013 }
3014 spin_unlock(&eqo->lock);
3015 return status;
3016 }
3017
3018 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3019 {
3020 spin_lock(&eqo->lock); /* BH is already disabled */
3021
3022 WARN_ON(eqo->state & (BE_EQ_POLL | BE_EQ_NAPI_YIELD));
3023 eqo->state = BE_EQ_IDLE;
3024
3025 spin_unlock(&eqo->lock);
3026 }
3027
3028 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3029 {
3030 bool status = true;
3031
3032 spin_lock_bh(&eqo->lock);
3033 if (eqo->state & BE_EQ_LOCKED) {
3034 eqo->state |= BE_EQ_POLL_YIELD;
3035 status = false;
3036 } else {
3037 eqo->state |= BE_EQ_POLL;
3038 }
3039 spin_unlock_bh(&eqo->lock);
3040 return status;
3041 }
3042
3043 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3044 {
3045 spin_lock_bh(&eqo->lock);
3046
3047 WARN_ON(eqo->state & (BE_EQ_NAPI));
3048 eqo->state = BE_EQ_IDLE;
3049
3050 spin_unlock_bh(&eqo->lock);
3051 }
3052
3053 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3054 {
3055 spin_lock_init(&eqo->lock);
3056 eqo->state = BE_EQ_IDLE;
3057 }
3058
3059 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3060 {
3061 local_bh_disable();
3062
3063 /* It's enough to just acquire napi lock on the eqo to stop
3064 * be_busy_poll() from processing any queueus.
3065 */
3066 while (!be_lock_napi(eqo))
3067 mdelay(1);
3068
3069 local_bh_enable();
3070 }
3071
3072 #else /* CONFIG_NET_RX_BUSY_POLL */
3073
3074 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3075 {
3076 return true;
3077 }
3078
3079 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3080 {
3081 }
3082
3083 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3084 {
3085 return false;
3086 }
3087
3088 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3089 {
3090 }
3091
3092 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3093 {
3094 }
3095
3096 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3097 {
3098 }
3099 #endif /* CONFIG_NET_RX_BUSY_POLL */
3100
3101 int be_poll(struct napi_struct *napi, int budget)
3102 {
3103 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3104 struct be_adapter *adapter = eqo->adapter;
3105 int max_work = 0, work, i, num_evts;
3106 struct be_rx_obj *rxo;
3107 struct be_tx_obj *txo;
3108 u32 mult_enc = 0;
3109
3110 num_evts = events_get(eqo);
3111
3112 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3113 be_process_tx(adapter, txo, i);
3114
3115 if (be_lock_napi(eqo)) {
3116 /* This loop will iterate twice for EQ0 in which
3117 * completions of the last RXQ (default one) are also processed
3118 * For other EQs the loop iterates only once
3119 */
3120 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3121 work = be_process_rx(rxo, napi, budget, NAPI_POLLING);
3122 max_work = max(work, max_work);
3123 }
3124 be_unlock_napi(eqo);
3125 } else {
3126 max_work = budget;
3127 }
3128
3129 if (is_mcc_eqo(eqo))
3130 be_process_mcc(adapter);
3131
3132 if (max_work < budget) {
3133 napi_complete(napi);
3134
3135 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3136 * delay via a delay multiplier encoding value
3137 */
3138 if (skyhawk_chip(adapter))
3139 mult_enc = be_get_eq_delay_mult_enc(eqo);
3140
3141 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3142 mult_enc);
3143 } else {
3144 /* As we'll continue in polling mode, count and clear events */
3145 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3146 }
3147 return max_work;
3148 }
3149
3150 #ifdef CONFIG_NET_RX_BUSY_POLL
3151 static int be_busy_poll(struct napi_struct *napi)
3152 {
3153 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3154 struct be_adapter *adapter = eqo->adapter;
3155 struct be_rx_obj *rxo;
3156 int i, work = 0;
3157
3158 if (!be_lock_busy_poll(eqo))
3159 return LL_FLUSH_BUSY;
3160
3161 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3162 work = be_process_rx(rxo, napi, 4, BUSY_POLLING);
3163 if (work)
3164 break;
3165 }
3166
3167 be_unlock_busy_poll(eqo);
3168 return work;
3169 }
3170 #endif
3171
3172 void be_detect_error(struct be_adapter *adapter)
3173 {
3174 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3175 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3176 u32 i;
3177 struct device *dev = &adapter->pdev->dev;
3178
3179 if (be_check_error(adapter, BE_ERROR_HW))
3180 return;
3181
3182 if (lancer_chip(adapter)) {
3183 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3184 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3185 be_set_error(adapter, BE_ERROR_UE);
3186 sliport_err1 = ioread32(adapter->db +
3187 SLIPORT_ERROR1_OFFSET);
3188 sliport_err2 = ioread32(adapter->db +
3189 SLIPORT_ERROR2_OFFSET);
3190 /* Do not log error messages if its a FW reset */
3191 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3192 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3193 dev_info(dev, "Firmware update in progress\n");
3194 } else {
3195 dev_err(dev, "Error detected in the card\n");
3196 dev_err(dev, "ERR: sliport status 0x%x\n",
3197 sliport_status);
3198 dev_err(dev, "ERR: sliport error1 0x%x\n",
3199 sliport_err1);
3200 dev_err(dev, "ERR: sliport error2 0x%x\n",
3201 sliport_err2);
3202 }
3203 }
3204 } else {
3205 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3206 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3207 ue_lo_mask = ioread32(adapter->pcicfg +
3208 PCICFG_UE_STATUS_LOW_MASK);
3209 ue_hi_mask = ioread32(adapter->pcicfg +
3210 PCICFG_UE_STATUS_HI_MASK);
3211
3212 ue_lo = (ue_lo & ~ue_lo_mask);
3213 ue_hi = (ue_hi & ~ue_hi_mask);
3214
3215 /* On certain platforms BE hardware can indicate spurious UEs.
3216 * Allow HW to stop working completely in case of a real UE.
3217 * Hence not setting the hw_error for UE detection.
3218 */
3219
3220 if (ue_lo || ue_hi) {
3221 dev_err(dev,
3222 "Unrecoverable Error detected in the adapter");
3223 dev_err(dev, "Please reboot server to recover");
3224 if (skyhawk_chip(adapter))
3225 be_set_error(adapter, BE_ERROR_UE);
3226
3227 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3228 if (ue_lo & 1)
3229 dev_err(dev, "UE: %s bit set\n",
3230 ue_status_low_desc[i]);
3231 }
3232 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3233 if (ue_hi & 1)
3234 dev_err(dev, "UE: %s bit set\n",
3235 ue_status_hi_desc[i]);
3236 }
3237 }
3238 }
3239 }
3240
3241 static void be_msix_disable(struct be_adapter *adapter)
3242 {
3243 if (msix_enabled(adapter)) {
3244 pci_disable_msix(adapter->pdev);
3245 adapter->num_msix_vec = 0;
3246 adapter->num_msix_roce_vec = 0;
3247 }
3248 }
3249
3250 static int be_msix_enable(struct be_adapter *adapter)
3251 {
3252 int i, num_vec;
3253 struct device *dev = &adapter->pdev->dev;
3254
3255 /* If RoCE is supported, program the max number of NIC vectors that
3256 * may be configured via set-channels, along with vectors needed for
3257 * RoCe. Else, just program the number we'll use initially.
3258 */
3259 if (be_roce_supported(adapter))
3260 num_vec = min_t(int, 2 * be_max_eqs(adapter),
3261 2 * num_online_cpus());
3262 else
3263 num_vec = adapter->cfg_num_qs;
3264
3265 for (i = 0; i < num_vec; i++)
3266 adapter->msix_entries[i].entry = i;
3267
3268 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3269 MIN_MSIX_VECTORS, num_vec);
3270 if (num_vec < 0)
3271 goto fail;
3272
3273 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3274 adapter->num_msix_roce_vec = num_vec / 2;
3275 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3276 adapter->num_msix_roce_vec);
3277 }
3278
3279 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3280
3281 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3282 adapter->num_msix_vec);
3283 return 0;
3284
3285 fail:
3286 dev_warn(dev, "MSIx enable failed\n");
3287
3288 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3289 if (be_virtfn(adapter))
3290 return num_vec;
3291 return 0;
3292 }
3293
3294 static inline int be_msix_vec_get(struct be_adapter *adapter,
3295 struct be_eq_obj *eqo)
3296 {
3297 return adapter->msix_entries[eqo->msix_idx].vector;
3298 }
3299
3300 static int be_msix_register(struct be_adapter *adapter)
3301 {
3302 struct net_device *netdev = adapter->netdev;
3303 struct be_eq_obj *eqo;
3304 int status, i, vec;
3305
3306 for_all_evt_queues(adapter, eqo, i) {
3307 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3308 vec = be_msix_vec_get(adapter, eqo);
3309 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3310 if (status)
3311 goto err_msix;
3312
3313 irq_set_affinity_hint(vec, eqo->affinity_mask);
3314 }
3315
3316 return 0;
3317 err_msix:
3318 for (i--; i >= 0; i--) {
3319 eqo = &adapter->eq_obj[i];
3320 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3321 }
3322 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3323 status);
3324 be_msix_disable(adapter);
3325 return status;
3326 }
3327
3328 static int be_irq_register(struct be_adapter *adapter)
3329 {
3330 struct net_device *netdev = adapter->netdev;
3331 int status;
3332
3333 if (msix_enabled(adapter)) {
3334 status = be_msix_register(adapter);
3335 if (status == 0)
3336 goto done;
3337 /* INTx is not supported for VF */
3338 if (be_virtfn(adapter))
3339 return status;
3340 }
3341
3342 /* INTx: only the first EQ is used */
3343 netdev->irq = adapter->pdev->irq;
3344 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3345 &adapter->eq_obj[0]);
3346 if (status) {
3347 dev_err(&adapter->pdev->dev,
3348 "INTx request IRQ failed - err %d\n", status);
3349 return status;
3350 }
3351 done:
3352 adapter->isr_registered = true;
3353 return 0;
3354 }
3355
3356 static void be_irq_unregister(struct be_adapter *adapter)
3357 {
3358 struct net_device *netdev = adapter->netdev;
3359 struct be_eq_obj *eqo;
3360 int i, vec;
3361
3362 if (!adapter->isr_registered)
3363 return;
3364
3365 /* INTx */
3366 if (!msix_enabled(adapter)) {
3367 free_irq(netdev->irq, &adapter->eq_obj[0]);
3368 goto done;
3369 }
3370
3371 /* MSIx */
3372 for_all_evt_queues(adapter, eqo, i) {
3373 vec = be_msix_vec_get(adapter, eqo);
3374 irq_set_affinity_hint(vec, NULL);
3375 free_irq(vec, eqo);
3376 }
3377
3378 done:
3379 adapter->isr_registered = false;
3380 }
3381
3382 static void be_rx_qs_destroy(struct be_adapter *adapter)
3383 {
3384 struct rss_info *rss = &adapter->rss_info;
3385 struct be_queue_info *q;
3386 struct be_rx_obj *rxo;
3387 int i;
3388
3389 for_all_rx_queues(adapter, rxo, i) {
3390 q = &rxo->q;
3391 if (q->created) {
3392 /* If RXQs are destroyed while in an "out of buffer"
3393 * state, there is a possibility of an HW stall on
3394 * Lancer. So, post 64 buffers to each queue to relieve
3395 * the "out of buffer" condition.
3396 * Make sure there's space in the RXQ before posting.
3397 */
3398 if (lancer_chip(adapter)) {
3399 be_rx_cq_clean(rxo);
3400 if (atomic_read(&q->used) == 0)
3401 be_post_rx_frags(rxo, GFP_KERNEL,
3402 MAX_RX_POST);
3403 }
3404
3405 be_cmd_rxq_destroy(adapter, q);
3406 be_rx_cq_clean(rxo);
3407 be_rxq_clean(rxo);
3408 }
3409 be_queue_free(adapter, q);
3410 }
3411
3412 if (rss->rss_flags) {
3413 rss->rss_flags = RSS_ENABLE_NONE;
3414 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3415 128, rss->rss_hkey);
3416 }
3417 }
3418
3419 static void be_disable_if_filters(struct be_adapter *adapter)
3420 {
3421 be_cmd_pmac_del(adapter, adapter->if_handle,
3422 adapter->pmac_id[0], 0);
3423
3424 be_clear_uc_list(adapter);
3425
3426 /* The IFACE flags are enabled in the open path and cleared
3427 * in the close path. When a VF gets detached from the host and
3428 * assigned to a VM the following happens:
3429 * - VF's IFACE flags get cleared in the detach path
3430 * - IFACE create is issued by the VF in the attach path
3431 * Due to a bug in the BE3/Skyhawk-R FW
3432 * (Lancer FW doesn't have the bug), the IFACE capability flags
3433 * specified along with the IFACE create cmd issued by a VF are not
3434 * honoured by FW. As a consequence, if a *new* driver
3435 * (that enables/disables IFACE flags in open/close)
3436 * is loaded in the host and an *old* driver is * used by a VM/VF,
3437 * the IFACE gets created *without* the needed flags.
3438 * To avoid this, disable RX-filter flags only for Lancer.
3439 */
3440 if (lancer_chip(adapter)) {
3441 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3442 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3443 }
3444 }
3445
3446 static int be_close(struct net_device *netdev)
3447 {
3448 struct be_adapter *adapter = netdev_priv(netdev);
3449 struct be_eq_obj *eqo;
3450 int i;
3451
3452 /* This protection is needed as be_close() may be called even when the
3453 * adapter is in cleared state (after eeh perm failure)
3454 */
3455 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3456 return 0;
3457
3458 be_disable_if_filters(adapter);
3459
3460 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3461 for_all_evt_queues(adapter, eqo, i) {
3462 napi_disable(&eqo->napi);
3463 be_disable_busy_poll(eqo);
3464 }
3465 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3466 }
3467
3468 be_async_mcc_disable(adapter);
3469
3470 /* Wait for all pending tx completions to arrive so that
3471 * all tx skbs are freed.
3472 */
3473 netif_tx_disable(netdev);
3474 be_tx_compl_clean(adapter);
3475
3476 be_rx_qs_destroy(adapter);
3477
3478 for_all_evt_queues(adapter, eqo, i) {
3479 if (msix_enabled(adapter))
3480 synchronize_irq(be_msix_vec_get(adapter, eqo));
3481 else
3482 synchronize_irq(netdev->irq);
3483 be_eq_clean(eqo);
3484 }
3485
3486 be_irq_unregister(adapter);
3487
3488 return 0;
3489 }
3490
3491 static int be_rx_qs_create(struct be_adapter *adapter)
3492 {
3493 struct rss_info *rss = &adapter->rss_info;
3494 u8 rss_key[RSS_HASH_KEY_LEN];
3495 struct be_rx_obj *rxo;
3496 int rc, i, j;
3497
3498 for_all_rx_queues(adapter, rxo, i) {
3499 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3500 sizeof(struct be_eth_rx_d));
3501 if (rc)
3502 return rc;
3503 }
3504
3505 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3506 rxo = default_rxo(adapter);
3507 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3508 rx_frag_size, adapter->if_handle,
3509 false, &rxo->rss_id);
3510 if (rc)
3511 return rc;
3512 }
3513
3514 for_all_rss_queues(adapter, rxo, i) {
3515 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3516 rx_frag_size, adapter->if_handle,
3517 true, &rxo->rss_id);
3518 if (rc)
3519 return rc;
3520 }
3521
3522 if (be_multi_rxq(adapter)) {
3523 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3524 for_all_rss_queues(adapter, rxo, i) {
3525 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3526 break;
3527 rss->rsstable[j + i] = rxo->rss_id;
3528 rss->rss_queue[j + i] = i;
3529 }
3530 }
3531 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3532 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3533
3534 if (!BEx_chip(adapter))
3535 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3536 RSS_ENABLE_UDP_IPV6;
3537
3538 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3539 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3540 RSS_INDIR_TABLE_LEN, rss_key);
3541 if (rc) {
3542 rss->rss_flags = RSS_ENABLE_NONE;
3543 return rc;
3544 }
3545
3546 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3547 } else {
3548 /* Disable RSS, if only default RX Q is created */
3549 rss->rss_flags = RSS_ENABLE_NONE;
3550 }
3551
3552
3553 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3554 * which is a queue empty condition
3555 */
3556 for_all_rx_queues(adapter, rxo, i)
3557 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3558
3559 return 0;
3560 }
3561
3562 static int be_enable_if_filters(struct be_adapter *adapter)
3563 {
3564 int status;
3565
3566 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3567 if (status)
3568 return status;
3569
3570 /* For BE3 VFs, the PF programs the initial MAC address */
3571 if (!(BEx_chip(adapter) && be_virtfn(adapter))) {
3572 status = be_cmd_pmac_add(adapter, adapter->netdev->dev_addr,
3573 adapter->if_handle,
3574 &adapter->pmac_id[0], 0);
3575 if (status)
3576 return status;
3577 }
3578
3579 if (adapter->vlans_added)
3580 be_vid_config(adapter);
3581
3582 be_set_rx_mode(adapter->netdev);
3583
3584 return 0;
3585 }
3586
3587 static int be_open(struct net_device *netdev)
3588 {
3589 struct be_adapter *adapter = netdev_priv(netdev);
3590 struct be_eq_obj *eqo;
3591 struct be_rx_obj *rxo;
3592 struct be_tx_obj *txo;
3593 u8 link_status;
3594 int status, i;
3595
3596 status = be_rx_qs_create(adapter);
3597 if (status)
3598 goto err;
3599
3600 status = be_enable_if_filters(adapter);
3601 if (status)
3602 goto err;
3603
3604 status = be_irq_register(adapter);
3605 if (status)
3606 goto err;
3607
3608 for_all_rx_queues(adapter, rxo, i)
3609 be_cq_notify(adapter, rxo->cq.id, true, 0);
3610
3611 for_all_tx_queues(adapter, txo, i)
3612 be_cq_notify(adapter, txo->cq.id, true, 0);
3613
3614 be_async_mcc_enable(adapter);
3615
3616 for_all_evt_queues(adapter, eqo, i) {
3617 napi_enable(&eqo->napi);
3618 be_enable_busy_poll(eqo);
3619 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3620 }
3621 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3622
3623 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3624 if (!status)
3625 be_link_status_update(adapter, link_status);
3626
3627 netif_tx_start_all_queues(netdev);
3628 #ifdef CONFIG_BE2NET_VXLAN
3629 if (skyhawk_chip(adapter))
3630 vxlan_get_rx_port(netdev);
3631 #endif
3632
3633 return 0;
3634 err:
3635 be_close(adapter->netdev);
3636 return -EIO;
3637 }
3638
3639 static int be_setup_wol(struct be_adapter *adapter, bool enable)
3640 {
3641 struct device *dev = &adapter->pdev->dev;
3642 struct be_dma_mem cmd;
3643 u8 mac[ETH_ALEN];
3644 int status;
3645
3646 eth_zero_addr(mac);
3647
3648 cmd.size = sizeof(struct be_cmd_req_acpi_wol_magic_config);
3649 cmd.va = dma_zalloc_coherent(dev, cmd.size, &cmd.dma, GFP_KERNEL);
3650 if (!cmd.va)
3651 return -ENOMEM;
3652
3653 if (enable) {
3654 status = pci_write_config_dword(adapter->pdev,
3655 PCICFG_PM_CONTROL_OFFSET,
3656 PCICFG_PM_CONTROL_MASK);
3657 if (status) {
3658 dev_err(dev, "Could not enable Wake-on-lan\n");
3659 goto err;
3660 }
3661 } else {
3662 ether_addr_copy(mac, adapter->netdev->dev_addr);
3663 }
3664
3665 status = be_cmd_enable_magic_wol(adapter, mac, &cmd);
3666 pci_enable_wake(adapter->pdev, PCI_D3hot, enable);
3667 pci_enable_wake(adapter->pdev, PCI_D3cold, enable);
3668 err:
3669 dma_free_coherent(dev, cmd.size, cmd.va, cmd.dma);
3670 return status;
3671 }
3672
3673 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3674 {
3675 u32 addr;
3676
3677 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3678
3679 mac[5] = (u8)(addr & 0xFF);
3680 mac[4] = (u8)((addr >> 8) & 0xFF);
3681 mac[3] = (u8)((addr >> 16) & 0xFF);
3682 /* Use the OUI from the current MAC address */
3683 memcpy(mac, adapter->netdev->dev_addr, 3);
3684 }
3685
3686 /*
3687 * Generate a seed MAC address from the PF MAC Address using jhash.
3688 * MAC Address for VFs are assigned incrementally starting from the seed.
3689 * These addresses are programmed in the ASIC by the PF and the VF driver
3690 * queries for the MAC address during its probe.
3691 */
3692 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3693 {
3694 u32 vf;
3695 int status = 0;
3696 u8 mac[ETH_ALEN];
3697 struct be_vf_cfg *vf_cfg;
3698
3699 be_vf_eth_addr_generate(adapter, mac);
3700
3701 for_all_vfs(adapter, vf_cfg, vf) {
3702 if (BEx_chip(adapter))
3703 status = be_cmd_pmac_add(adapter, mac,
3704 vf_cfg->if_handle,
3705 &vf_cfg->pmac_id, vf + 1);
3706 else
3707 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3708 vf + 1);
3709
3710 if (status)
3711 dev_err(&adapter->pdev->dev,
3712 "Mac address assignment failed for VF %d\n",
3713 vf);
3714 else
3715 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3716
3717 mac[5] += 1;
3718 }
3719 return status;
3720 }
3721
3722 static int be_vfs_mac_query(struct be_adapter *adapter)
3723 {
3724 int status, vf;
3725 u8 mac[ETH_ALEN];
3726 struct be_vf_cfg *vf_cfg;
3727
3728 for_all_vfs(adapter, vf_cfg, vf) {
3729 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3730 mac, vf_cfg->if_handle,
3731 false, vf+1);
3732 if (status)
3733 return status;
3734 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3735 }
3736 return 0;
3737 }
3738
3739 static void be_vf_clear(struct be_adapter *adapter)
3740 {
3741 struct be_vf_cfg *vf_cfg;
3742 u32 vf;
3743
3744 if (pci_vfs_assigned(adapter->pdev)) {
3745 dev_warn(&adapter->pdev->dev,
3746 "VFs are assigned to VMs: not disabling VFs\n");
3747 goto done;
3748 }
3749
3750 pci_disable_sriov(adapter->pdev);
3751
3752 for_all_vfs(adapter, vf_cfg, vf) {
3753 if (BEx_chip(adapter))
3754 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3755 vf_cfg->pmac_id, vf + 1);
3756 else
3757 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3758 vf + 1);
3759
3760 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3761 }
3762 done:
3763 kfree(adapter->vf_cfg);
3764 adapter->num_vfs = 0;
3765 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3766 }
3767
3768 static void be_clear_queues(struct be_adapter *adapter)
3769 {
3770 be_mcc_queues_destroy(adapter);
3771 be_rx_cqs_destroy(adapter);
3772 be_tx_queues_destroy(adapter);
3773 be_evt_queues_destroy(adapter);
3774 }
3775
3776 static void be_cancel_worker(struct be_adapter *adapter)
3777 {
3778 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3779 cancel_delayed_work_sync(&adapter->work);
3780 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3781 }
3782 }
3783
3784 static void be_cancel_err_detection(struct be_adapter *adapter)
3785 {
3786 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3787 cancel_delayed_work_sync(&adapter->be_err_detection_work);
3788 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3789 }
3790 }
3791
3792 #ifdef CONFIG_BE2NET_VXLAN
3793 static void be_disable_vxlan_offloads(struct be_adapter *adapter)
3794 {
3795 struct net_device *netdev = adapter->netdev;
3796
3797 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
3798 be_cmd_manage_iface(adapter, adapter->if_handle,
3799 OP_CONVERT_TUNNEL_TO_NORMAL);
3800
3801 if (adapter->vxlan_port)
3802 be_cmd_set_vxlan_port(adapter, 0);
3803
3804 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
3805 adapter->vxlan_port = 0;
3806
3807 netdev->hw_enc_features = 0;
3808 netdev->hw_features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3809 netdev->features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3810 }
3811 #endif
3812
3813 static u16 be_calculate_vf_qs(struct be_adapter *adapter, u16 num_vfs)
3814 {
3815 struct be_resources res = adapter->pool_res;
3816 u16 num_vf_qs = 1;
3817
3818 /* Distribute the queue resources among the PF and it's VFs
3819 * Do not distribute queue resources in multi-channel configuration.
3820 */
3821 if (num_vfs && !be_is_mc(adapter)) {
3822 /* Divide the qpairs evenly among the VFs and the PF, capped
3823 * at VF-EQ-count. Any remainder qpairs belong to the PF.
3824 */
3825 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
3826 res.max_rss_qs / (num_vfs + 1));
3827
3828 /* Skyhawk-R chip supports only MAX_RSS_IFACES RSS capable
3829 * interfaces per port. Provide RSS on VFs, only if number
3830 * of VFs requested is less than MAX_RSS_IFACES limit.
3831 */
3832 if (num_vfs >= MAX_RSS_IFACES)
3833 num_vf_qs = 1;
3834 }
3835 return num_vf_qs;
3836 }
3837
3838 static int be_clear(struct be_adapter *adapter)
3839 {
3840 struct pci_dev *pdev = adapter->pdev;
3841 u16 num_vf_qs;
3842
3843 be_cancel_worker(adapter);
3844
3845 if (sriov_enabled(adapter))
3846 be_vf_clear(adapter);
3847
3848 /* Re-configure FW to distribute resources evenly across max-supported
3849 * number of VFs, only when VFs are not already enabled.
3850 */
3851 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
3852 !pci_vfs_assigned(pdev)) {
3853 num_vf_qs = be_calculate_vf_qs(adapter,
3854 pci_sriov_get_totalvfs(pdev));
3855 be_cmd_set_sriov_config(adapter, adapter->pool_res,
3856 pci_sriov_get_totalvfs(pdev),
3857 num_vf_qs);
3858 }
3859
3860 #ifdef CONFIG_BE2NET_VXLAN
3861 be_disable_vxlan_offloads(adapter);
3862 #endif
3863 kfree(adapter->pmac_id);
3864 adapter->pmac_id = NULL;
3865
3866 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
3867
3868 be_clear_queues(adapter);
3869
3870 be_msix_disable(adapter);
3871 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
3872 return 0;
3873 }
3874
3875 static int be_vfs_if_create(struct be_adapter *adapter)
3876 {
3877 struct be_resources res = {0};
3878 u32 cap_flags, en_flags, vf;
3879 struct be_vf_cfg *vf_cfg;
3880 int status;
3881
3882 /* If a FW profile exists, then cap_flags are updated */
3883 cap_flags = BE_VF_IF_EN_FLAGS;
3884
3885 for_all_vfs(adapter, vf_cfg, vf) {
3886 if (!BE3_chip(adapter)) {
3887 status = be_cmd_get_profile_config(adapter, &res,
3888 RESOURCE_LIMITS,
3889 vf + 1);
3890 if (!status) {
3891 cap_flags = res.if_cap_flags;
3892 /* Prevent VFs from enabling VLAN promiscuous
3893 * mode
3894 */
3895 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
3896 }
3897 }
3898
3899 /* PF should enable IF flags during proxy if_create call */
3900 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
3901 status = be_cmd_if_create(adapter, cap_flags, en_flags,
3902 &vf_cfg->if_handle, vf + 1);
3903 if (status)
3904 return status;
3905 }
3906
3907 return 0;
3908 }
3909
3910 static int be_vf_setup_init(struct be_adapter *adapter)
3911 {
3912 struct be_vf_cfg *vf_cfg;
3913 int vf;
3914
3915 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
3916 GFP_KERNEL);
3917 if (!adapter->vf_cfg)
3918 return -ENOMEM;
3919
3920 for_all_vfs(adapter, vf_cfg, vf) {
3921 vf_cfg->if_handle = -1;
3922 vf_cfg->pmac_id = -1;
3923 }
3924 return 0;
3925 }
3926
3927 static int be_vf_setup(struct be_adapter *adapter)
3928 {
3929 struct device *dev = &adapter->pdev->dev;
3930 struct be_vf_cfg *vf_cfg;
3931 int status, old_vfs, vf;
3932 bool spoofchk;
3933
3934 old_vfs = pci_num_vf(adapter->pdev);
3935
3936 status = be_vf_setup_init(adapter);
3937 if (status)
3938 goto err;
3939
3940 if (old_vfs) {
3941 for_all_vfs(adapter, vf_cfg, vf) {
3942 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
3943 if (status)
3944 goto err;
3945 }
3946
3947 status = be_vfs_mac_query(adapter);
3948 if (status)
3949 goto err;
3950 } else {
3951 status = be_vfs_if_create(adapter);
3952 if (status)
3953 goto err;
3954
3955 status = be_vf_eth_addr_config(adapter);
3956 if (status)
3957 goto err;
3958 }
3959
3960 for_all_vfs(adapter, vf_cfg, vf) {
3961 /* Allow VFs to programs MAC/VLAN filters */
3962 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
3963 vf + 1);
3964 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
3965 status = be_cmd_set_fn_privileges(adapter,
3966 vf_cfg->privileges |
3967 BE_PRIV_FILTMGMT,
3968 vf + 1);
3969 if (!status) {
3970 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
3971 dev_info(dev, "VF%d has FILTMGMT privilege\n",
3972 vf);
3973 }
3974 }
3975
3976 /* Allow full available bandwidth */
3977 if (!old_vfs)
3978 be_cmd_config_qos(adapter, 0, 0, vf + 1);
3979
3980 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
3981 vf_cfg->if_handle, NULL,
3982 &spoofchk);
3983 if (!status)
3984 vf_cfg->spoofchk = spoofchk;
3985
3986 if (!old_vfs) {
3987 be_cmd_enable_vf(adapter, vf + 1);
3988 be_cmd_set_logical_link_config(adapter,
3989 IFLA_VF_LINK_STATE_AUTO,
3990 vf+1);
3991 }
3992 }
3993
3994 if (!old_vfs) {
3995 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
3996 if (status) {
3997 dev_err(dev, "SRIOV enable failed\n");
3998 adapter->num_vfs = 0;
3999 goto err;
4000 }
4001 }
4002
4003 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4004 return 0;
4005 err:
4006 dev_err(dev, "VF setup failed\n");
4007 be_vf_clear(adapter);
4008 return status;
4009 }
4010
4011 /* Converting function_mode bits on BE3 to SH mc_type enums */
4012
4013 static u8 be_convert_mc_type(u32 function_mode)
4014 {
4015 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4016 return vNIC1;
4017 else if (function_mode & QNQ_MODE)
4018 return FLEX10;
4019 else if (function_mode & VNIC_MODE)
4020 return vNIC2;
4021 else if (function_mode & UMC_ENABLED)
4022 return UMC;
4023 else
4024 return MC_NONE;
4025 }
4026
4027 /* On BE2/BE3 FW does not suggest the supported limits */
4028 static void BEx_get_resources(struct be_adapter *adapter,
4029 struct be_resources *res)
4030 {
4031 bool use_sriov = adapter->num_vfs ? 1 : 0;
4032
4033 if (be_physfn(adapter))
4034 res->max_uc_mac = BE_UC_PMAC_COUNT;
4035 else
4036 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4037
4038 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4039
4040 if (be_is_mc(adapter)) {
4041 /* Assuming that there are 4 channels per port,
4042 * when multi-channel is enabled
4043 */
4044 if (be_is_qnq_mode(adapter))
4045 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4046 else
4047 /* In a non-qnq multichannel mode, the pvid
4048 * takes up one vlan entry
4049 */
4050 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4051 } else {
4052 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4053 }
4054
4055 res->max_mcast_mac = BE_MAX_MC;
4056
4057 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4058 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4059 * *only* if it is RSS-capable.
4060 */
4061 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4062 be_virtfn(adapter) ||
4063 (be_is_mc(adapter) &&
4064 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4065 res->max_tx_qs = 1;
4066 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4067 struct be_resources super_nic_res = {0};
4068
4069 /* On a SuperNIC profile, the driver needs to use the
4070 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4071 */
4072 be_cmd_get_profile_config(adapter, &super_nic_res,
4073 RESOURCE_LIMITS, 0);
4074 /* Some old versions of BE3 FW don't report max_tx_qs value */
4075 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4076 } else {
4077 res->max_tx_qs = BE3_MAX_TX_QS;
4078 }
4079
4080 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4081 !use_sriov && be_physfn(adapter))
4082 res->max_rss_qs = (adapter->be3_native) ?
4083 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4084 res->max_rx_qs = res->max_rss_qs + 1;
4085
4086 if (be_physfn(adapter))
4087 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4088 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4089 else
4090 res->max_evt_qs = 1;
4091
4092 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4093 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4094 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4095 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4096 }
4097
4098 static void be_setup_init(struct be_adapter *adapter)
4099 {
4100 adapter->vlan_prio_bmap = 0xff;
4101 adapter->phy.link_speed = -1;
4102 adapter->if_handle = -1;
4103 adapter->be3_native = false;
4104 adapter->if_flags = 0;
4105 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4106 if (be_physfn(adapter))
4107 adapter->cmd_privileges = MAX_PRIVILEGES;
4108 else
4109 adapter->cmd_privileges = MIN_PRIVILEGES;
4110 }
4111
4112 static int be_get_sriov_config(struct be_adapter *adapter)
4113 {
4114 struct be_resources res = {0};
4115 int max_vfs, old_vfs;
4116
4117 be_cmd_get_profile_config(adapter, &res, RESOURCE_LIMITS, 0);
4118
4119 /* Some old versions of BE3 FW don't report max_vfs value */
4120 if (BE3_chip(adapter) && !res.max_vfs) {
4121 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4122 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4123 }
4124
4125 adapter->pool_res = res;
4126
4127 /* If during previous unload of the driver, the VFs were not disabled,
4128 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4129 * Instead use the TotalVFs value stored in the pci-dev struct.
4130 */
4131 old_vfs = pci_num_vf(adapter->pdev);
4132 if (old_vfs) {
4133 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4134 old_vfs);
4135
4136 adapter->pool_res.max_vfs =
4137 pci_sriov_get_totalvfs(adapter->pdev);
4138 adapter->num_vfs = old_vfs;
4139 }
4140
4141 return 0;
4142 }
4143
4144 static void be_alloc_sriov_res(struct be_adapter *adapter)
4145 {
4146 int old_vfs = pci_num_vf(adapter->pdev);
4147 u16 num_vf_qs;
4148 int status;
4149
4150 be_get_sriov_config(adapter);
4151
4152 if (!old_vfs)
4153 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4154
4155 /* When the HW is in SRIOV capable configuration, the PF-pool
4156 * resources are given to PF during driver load, if there are no
4157 * old VFs. This facility is not available in BE3 FW.
4158 * Also, this is done by FW in Lancer chip.
4159 */
4160 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4161 num_vf_qs = be_calculate_vf_qs(adapter, 0);
4162 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4163 num_vf_qs);
4164 if (status)
4165 dev_err(&adapter->pdev->dev,
4166 "Failed to optimize SRIOV resources\n");
4167 }
4168 }
4169
4170 static int be_get_resources(struct be_adapter *adapter)
4171 {
4172 struct device *dev = &adapter->pdev->dev;
4173 struct be_resources res = {0};
4174 int status;
4175
4176 if (BEx_chip(adapter)) {
4177 BEx_get_resources(adapter, &res);
4178 adapter->res = res;
4179 }
4180
4181 /* For Lancer, SH etc read per-function resource limits from FW.
4182 * GET_FUNC_CONFIG returns per function guaranteed limits.
4183 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4184 */
4185 if (!BEx_chip(adapter)) {
4186 status = be_cmd_get_func_config(adapter, &res);
4187 if (status)
4188 return status;
4189
4190 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4191 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4192 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4193 res.max_rss_qs -= 1;
4194
4195 /* If RoCE may be enabled stash away half the EQs for RoCE */
4196 if (be_roce_supported(adapter))
4197 res.max_evt_qs /= 2;
4198 adapter->res = res;
4199 }
4200
4201 /* If FW supports RSS default queue, then skip creating non-RSS
4202 * queue for non-IP traffic.
4203 */
4204 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4205 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4206
4207 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4208 be_max_txqs(adapter), be_max_rxqs(adapter),
4209 be_max_rss(adapter), be_max_eqs(adapter),
4210 be_max_vfs(adapter));
4211 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4212 be_max_uc(adapter), be_max_mc(adapter),
4213 be_max_vlans(adapter));
4214
4215 /* Sanitize cfg_num_qs based on HW and platform limits */
4216 adapter->cfg_num_qs = min_t(u16, netif_get_num_default_rss_queues(),
4217 be_max_qs(adapter));
4218 return 0;
4219 }
4220
4221 static int be_get_config(struct be_adapter *adapter)
4222 {
4223 int status, level;
4224 u16 profile_id;
4225
4226 status = be_cmd_get_cntl_attributes(adapter);
4227 if (status)
4228 return status;
4229
4230 status = be_cmd_query_fw_cfg(adapter);
4231 if (status)
4232 return status;
4233
4234 if (!lancer_chip(adapter) && be_physfn(adapter))
4235 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4236
4237 if (BEx_chip(adapter)) {
4238 level = be_cmd_get_fw_log_level(adapter);
4239 adapter->msg_enable =
4240 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4241 }
4242
4243 be_cmd_get_acpi_wol_cap(adapter);
4244
4245 be_cmd_query_port_name(adapter);
4246
4247 if (be_physfn(adapter)) {
4248 status = be_cmd_get_active_profile(adapter, &profile_id);
4249 if (!status)
4250 dev_info(&adapter->pdev->dev,
4251 "Using profile 0x%x\n", profile_id);
4252 }
4253
4254 status = be_get_resources(adapter);
4255 if (status)
4256 return status;
4257
4258 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4259 sizeof(*adapter->pmac_id), GFP_KERNEL);
4260 if (!adapter->pmac_id)
4261 return -ENOMEM;
4262
4263 return 0;
4264 }
4265
4266 static int be_mac_setup(struct be_adapter *adapter)
4267 {
4268 u8 mac[ETH_ALEN];
4269 int status;
4270
4271 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4272 status = be_cmd_get_perm_mac(adapter, mac);
4273 if (status)
4274 return status;
4275
4276 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
4277 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4278 }
4279
4280 return 0;
4281 }
4282
4283 static void be_schedule_worker(struct be_adapter *adapter)
4284 {
4285 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
4286 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4287 }
4288
4289 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4290 {
4291 schedule_delayed_work(&adapter->be_err_detection_work,
4292 msecs_to_jiffies(delay));
4293 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4294 }
4295
4296 static int be_setup_queues(struct be_adapter *adapter)
4297 {
4298 struct net_device *netdev = adapter->netdev;
4299 int status;
4300
4301 status = be_evt_queues_create(adapter);
4302 if (status)
4303 goto err;
4304
4305 status = be_tx_qs_create(adapter);
4306 if (status)
4307 goto err;
4308
4309 status = be_rx_cqs_create(adapter);
4310 if (status)
4311 goto err;
4312
4313 status = be_mcc_queues_create(adapter);
4314 if (status)
4315 goto err;
4316
4317 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4318 if (status)
4319 goto err;
4320
4321 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4322 if (status)
4323 goto err;
4324
4325 return 0;
4326 err:
4327 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4328 return status;
4329 }
4330
4331 static int be_if_create(struct be_adapter *adapter)
4332 {
4333 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4334 u32 cap_flags = be_if_cap_flags(adapter);
4335 int status;
4336
4337 if (adapter->cfg_num_qs == 1)
4338 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4339
4340 en_flags &= cap_flags;
4341 /* will enable all the needed filter flags in be_open() */
4342 status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4343 &adapter->if_handle, 0);
4344
4345 return status;
4346 }
4347
4348 int be_update_queues(struct be_adapter *adapter)
4349 {
4350 struct net_device *netdev = adapter->netdev;
4351 int status;
4352
4353 if (netif_running(netdev))
4354 be_close(netdev);
4355
4356 be_cancel_worker(adapter);
4357
4358 /* If any vectors have been shared with RoCE we cannot re-program
4359 * the MSIx table.
4360 */
4361 if (!adapter->num_msix_roce_vec)
4362 be_msix_disable(adapter);
4363
4364 be_clear_queues(adapter);
4365 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4366 if (status)
4367 return status;
4368
4369 if (!msix_enabled(adapter)) {
4370 status = be_msix_enable(adapter);
4371 if (status)
4372 return status;
4373 }
4374
4375 status = be_if_create(adapter);
4376 if (status)
4377 return status;
4378
4379 status = be_setup_queues(adapter);
4380 if (status)
4381 return status;
4382
4383 be_schedule_worker(adapter);
4384
4385 if (netif_running(netdev))
4386 status = be_open(netdev);
4387
4388 return status;
4389 }
4390
4391 static inline int fw_major_num(const char *fw_ver)
4392 {
4393 int fw_major = 0, i;
4394
4395 i = sscanf(fw_ver, "%d.", &fw_major);
4396 if (i != 1)
4397 return 0;
4398
4399 return fw_major;
4400 }
4401
4402 /* If any VFs are already enabled don't FLR the PF */
4403 static bool be_reset_required(struct be_adapter *adapter)
4404 {
4405 return pci_num_vf(adapter->pdev) ? false : true;
4406 }
4407
4408 /* Wait for the FW to be ready and perform the required initialization */
4409 static int be_func_init(struct be_adapter *adapter)
4410 {
4411 int status;
4412
4413 status = be_fw_wait_ready(adapter);
4414 if (status)
4415 return status;
4416
4417 if (be_reset_required(adapter)) {
4418 status = be_cmd_reset_function(adapter);
4419 if (status)
4420 return status;
4421
4422 /* Wait for interrupts to quiesce after an FLR */
4423 msleep(100);
4424
4425 /* We can clear all errors when function reset succeeds */
4426 be_clear_error(adapter, BE_CLEAR_ALL);
4427 }
4428
4429 /* Tell FW we're ready to fire cmds */
4430 status = be_cmd_fw_init(adapter);
4431 if (status)
4432 return status;
4433
4434 /* Allow interrupts for other ULPs running on NIC function */
4435 be_intr_set(adapter, true);
4436
4437 return 0;
4438 }
4439
4440 static int be_setup(struct be_adapter *adapter)
4441 {
4442 struct device *dev = &adapter->pdev->dev;
4443 int status;
4444
4445 status = be_func_init(adapter);
4446 if (status)
4447 return status;
4448
4449 be_setup_init(adapter);
4450
4451 if (!lancer_chip(adapter))
4452 be_cmd_req_native_mode(adapter);
4453
4454 /* invoke this cmd first to get pf_num and vf_num which are needed
4455 * for issuing profile related cmds
4456 */
4457 if (!BEx_chip(adapter)) {
4458 status = be_cmd_get_func_config(adapter, NULL);
4459 if (status)
4460 return status;
4461 }
4462
4463 if (!BE2_chip(adapter) && be_physfn(adapter))
4464 be_alloc_sriov_res(adapter);
4465
4466 status = be_get_config(adapter);
4467 if (status)
4468 goto err;
4469
4470 status = be_msix_enable(adapter);
4471 if (status)
4472 goto err;
4473
4474 /* will enable all the needed filter flags in be_open() */
4475 status = be_if_create(adapter);
4476 if (status)
4477 goto err;
4478
4479 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4480 rtnl_lock();
4481 status = be_setup_queues(adapter);
4482 rtnl_unlock();
4483 if (status)
4484 goto err;
4485
4486 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4487
4488 status = be_mac_setup(adapter);
4489 if (status)
4490 goto err;
4491
4492 be_cmd_get_fw_ver(adapter);
4493 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4494
4495 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4496 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4497 adapter->fw_ver);
4498 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4499 }
4500
4501 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4502 adapter->rx_fc);
4503 if (status)
4504 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4505 &adapter->rx_fc);
4506
4507 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4508 adapter->tx_fc, adapter->rx_fc);
4509
4510 if (be_physfn(adapter))
4511 be_cmd_set_logical_link_config(adapter,
4512 IFLA_VF_LINK_STATE_AUTO, 0);
4513
4514 if (adapter->num_vfs)
4515 be_vf_setup(adapter);
4516
4517 status = be_cmd_get_phy_info(adapter);
4518 if (!status && be_pause_supported(adapter))
4519 adapter->phy.fc_autoneg = 1;
4520
4521 be_schedule_worker(adapter);
4522 adapter->flags |= BE_FLAGS_SETUP_DONE;
4523 return 0;
4524 err:
4525 be_clear(adapter);
4526 return status;
4527 }
4528
4529 #ifdef CONFIG_NET_POLL_CONTROLLER
4530 static void be_netpoll(struct net_device *netdev)
4531 {
4532 struct be_adapter *adapter = netdev_priv(netdev);
4533 struct be_eq_obj *eqo;
4534 int i;
4535
4536 for_all_evt_queues(adapter, eqo, i) {
4537 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4538 napi_schedule(&eqo->napi);
4539 }
4540 }
4541 #endif
4542
4543 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4544 {
4545 const struct firmware *fw;
4546 int status;
4547
4548 if (!netif_running(adapter->netdev)) {
4549 dev_err(&adapter->pdev->dev,
4550 "Firmware load not allowed (interface is down)\n");
4551 return -ENETDOWN;
4552 }
4553
4554 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4555 if (status)
4556 goto fw_exit;
4557
4558 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4559
4560 if (lancer_chip(adapter))
4561 status = lancer_fw_download(adapter, fw);
4562 else
4563 status = be_fw_download(adapter, fw);
4564
4565 if (!status)
4566 be_cmd_get_fw_ver(adapter);
4567
4568 fw_exit:
4569 release_firmware(fw);
4570 return status;
4571 }
4572
4573 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4574 u16 flags)
4575 {
4576 struct be_adapter *adapter = netdev_priv(dev);
4577 struct nlattr *attr, *br_spec;
4578 int rem;
4579 int status = 0;
4580 u16 mode = 0;
4581
4582 if (!sriov_enabled(adapter))
4583 return -EOPNOTSUPP;
4584
4585 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4586 if (!br_spec)
4587 return -EINVAL;
4588
4589 nla_for_each_nested(attr, br_spec, rem) {
4590 if (nla_type(attr) != IFLA_BRIDGE_MODE)
4591 continue;
4592
4593 if (nla_len(attr) < sizeof(mode))
4594 return -EINVAL;
4595
4596 mode = nla_get_u16(attr);
4597 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4598 return -EOPNOTSUPP;
4599
4600 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4601 return -EINVAL;
4602
4603 status = be_cmd_set_hsw_config(adapter, 0, 0,
4604 adapter->if_handle,
4605 mode == BRIDGE_MODE_VEPA ?
4606 PORT_FWD_TYPE_VEPA :
4607 PORT_FWD_TYPE_VEB, 0);
4608 if (status)
4609 goto err;
4610
4611 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
4612 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4613
4614 return status;
4615 }
4616 err:
4617 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
4618 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4619
4620 return status;
4621 }
4622
4623 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4624 struct net_device *dev, u32 filter_mask,
4625 int nlflags)
4626 {
4627 struct be_adapter *adapter = netdev_priv(dev);
4628 int status = 0;
4629 u8 hsw_mode;
4630
4631 /* BE and Lancer chips support VEB mode only */
4632 if (BEx_chip(adapter) || lancer_chip(adapter)) {
4633 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
4634 if (!pci_sriov_get_totalvfs(adapter->pdev))
4635 return 0;
4636 hsw_mode = PORT_FWD_TYPE_VEB;
4637 } else {
4638 status = be_cmd_get_hsw_config(adapter, NULL, 0,
4639 adapter->if_handle, &hsw_mode,
4640 NULL);
4641 if (status)
4642 return 0;
4643
4644 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
4645 return 0;
4646 }
4647
4648 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
4649 hsw_mode == PORT_FWD_TYPE_VEPA ?
4650 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
4651 0, 0, nlflags, filter_mask, NULL);
4652 }
4653
4654 #ifdef CONFIG_BE2NET_VXLAN
4655 /* VxLAN offload Notes:
4656 *
4657 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
4658 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
4659 * is expected to work across all types of IP tunnels once exported. Skyhawk
4660 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
4661 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
4662 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
4663 * those other tunnels are unexported on the fly through ndo_features_check().
4664 *
4665 * Skyhawk supports VxLAN offloads only for one UDP dport. So, if the stack
4666 * adds more than one port, disable offloads and don't re-enable them again
4667 * until after all the tunnels are removed.
4668 */
4669 static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
4670 __be16 port)
4671 {
4672 struct be_adapter *adapter = netdev_priv(netdev);
4673 struct device *dev = &adapter->pdev->dev;
4674 int status;
4675
4676 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
4677 return;
4678
4679 if (adapter->vxlan_port == port && adapter->vxlan_port_count) {
4680 adapter->vxlan_port_aliases++;
4681 return;
4682 }
4683
4684 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
4685 dev_info(dev,
4686 "Only one UDP port supported for VxLAN offloads\n");
4687 dev_info(dev, "Disabling VxLAN offloads\n");
4688 adapter->vxlan_port_count++;
4689 goto err;
4690 }
4691
4692 if (adapter->vxlan_port_count++ >= 1)
4693 return;
4694
4695 status = be_cmd_manage_iface(adapter, adapter->if_handle,
4696 OP_CONVERT_NORMAL_TO_TUNNEL);
4697 if (status) {
4698 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
4699 goto err;
4700 }
4701
4702 status = be_cmd_set_vxlan_port(adapter, port);
4703 if (status) {
4704 dev_warn(dev, "Failed to add VxLAN port\n");
4705 goto err;
4706 }
4707 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
4708 adapter->vxlan_port = port;
4709
4710 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4711 NETIF_F_TSO | NETIF_F_TSO6 |
4712 NETIF_F_GSO_UDP_TUNNEL;
4713 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
4714 netdev->features |= NETIF_F_GSO_UDP_TUNNEL;
4715
4716 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4717 be16_to_cpu(port));
4718 return;
4719 err:
4720 be_disable_vxlan_offloads(adapter);
4721 }
4722
4723 static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family,
4724 __be16 port)
4725 {
4726 struct be_adapter *adapter = netdev_priv(netdev);
4727
4728 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
4729 return;
4730
4731 if (adapter->vxlan_port != port)
4732 goto done;
4733
4734 if (adapter->vxlan_port_aliases) {
4735 adapter->vxlan_port_aliases--;
4736 return;
4737 }
4738
4739 be_disable_vxlan_offloads(adapter);
4740
4741 dev_info(&adapter->pdev->dev,
4742 "Disabled VxLAN offloads for UDP port %d\n",
4743 be16_to_cpu(port));
4744 done:
4745 adapter->vxlan_port_count--;
4746 }
4747
4748 static netdev_features_t be_features_check(struct sk_buff *skb,
4749 struct net_device *dev,
4750 netdev_features_t features)
4751 {
4752 struct be_adapter *adapter = netdev_priv(dev);
4753 u8 l4_hdr = 0;
4754
4755 /* The code below restricts offload features for some tunneled packets.
4756 * Offload features for normal (non tunnel) packets are unchanged.
4757 */
4758 if (!skb->encapsulation ||
4759 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
4760 return features;
4761
4762 /* It's an encapsulated packet and VxLAN offloads are enabled. We
4763 * should disable tunnel offload features if it's not a VxLAN packet,
4764 * as tunnel offloads have been enabled only for VxLAN. This is done to
4765 * allow other tunneled traffic like GRE work fine while VxLAN
4766 * offloads are configured in Skyhawk-R.
4767 */
4768 switch (vlan_get_protocol(skb)) {
4769 case htons(ETH_P_IP):
4770 l4_hdr = ip_hdr(skb)->protocol;
4771 break;
4772 case htons(ETH_P_IPV6):
4773 l4_hdr = ipv6_hdr(skb)->nexthdr;
4774 break;
4775 default:
4776 return features;
4777 }
4778
4779 if (l4_hdr != IPPROTO_UDP ||
4780 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
4781 skb->inner_protocol != htons(ETH_P_TEB) ||
4782 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
4783 sizeof(struct udphdr) + sizeof(struct vxlanhdr))
4784 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
4785
4786 return features;
4787 }
4788 #endif
4789
4790 static int be_get_phys_port_id(struct net_device *dev,
4791 struct netdev_phys_item_id *ppid)
4792 {
4793 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
4794 struct be_adapter *adapter = netdev_priv(dev);
4795 u8 *id;
4796
4797 if (MAX_PHYS_ITEM_ID_LEN < id_len)
4798 return -ENOSPC;
4799
4800 ppid->id[0] = adapter->hba_port_num + 1;
4801 id = &ppid->id[1];
4802 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
4803 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
4804 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
4805
4806 ppid->id_len = id_len;
4807
4808 return 0;
4809 }
4810
4811 static const struct net_device_ops be_netdev_ops = {
4812 .ndo_open = be_open,
4813 .ndo_stop = be_close,
4814 .ndo_start_xmit = be_xmit,
4815 .ndo_set_rx_mode = be_set_rx_mode,
4816 .ndo_set_mac_address = be_mac_addr_set,
4817 .ndo_change_mtu = be_change_mtu,
4818 .ndo_get_stats64 = be_get_stats64,
4819 .ndo_validate_addr = eth_validate_addr,
4820 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
4821 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
4822 .ndo_set_vf_mac = be_set_vf_mac,
4823 .ndo_set_vf_vlan = be_set_vf_vlan,
4824 .ndo_set_vf_rate = be_set_vf_tx_rate,
4825 .ndo_get_vf_config = be_get_vf_config,
4826 .ndo_set_vf_link_state = be_set_vf_link_state,
4827 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
4828 #ifdef CONFIG_NET_POLL_CONTROLLER
4829 .ndo_poll_controller = be_netpoll,
4830 #endif
4831 .ndo_bridge_setlink = be_ndo_bridge_setlink,
4832 .ndo_bridge_getlink = be_ndo_bridge_getlink,
4833 #ifdef CONFIG_NET_RX_BUSY_POLL
4834 .ndo_busy_poll = be_busy_poll,
4835 #endif
4836 #ifdef CONFIG_BE2NET_VXLAN
4837 .ndo_add_vxlan_port = be_add_vxlan_port,
4838 .ndo_del_vxlan_port = be_del_vxlan_port,
4839 .ndo_features_check = be_features_check,
4840 #endif
4841 .ndo_get_phys_port_id = be_get_phys_port_id,
4842 };
4843
4844 static void be_netdev_init(struct net_device *netdev)
4845 {
4846 struct be_adapter *adapter = netdev_priv(netdev);
4847
4848 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4849 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
4850 NETIF_F_HW_VLAN_CTAG_TX;
4851 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
4852 netdev->hw_features |= NETIF_F_RXHASH;
4853
4854 netdev->features |= netdev->hw_features |
4855 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
4856
4857 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4858 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
4859
4860 netdev->priv_flags |= IFF_UNICAST_FLT;
4861
4862 netdev->flags |= IFF_MULTICAST;
4863
4864 netif_set_gso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
4865
4866 netdev->netdev_ops = &be_netdev_ops;
4867
4868 netdev->ethtool_ops = &be_ethtool_ops;
4869 }
4870
4871 static void be_cleanup(struct be_adapter *adapter)
4872 {
4873 struct net_device *netdev = adapter->netdev;
4874
4875 rtnl_lock();
4876 netif_device_detach(netdev);
4877 if (netif_running(netdev))
4878 be_close(netdev);
4879 rtnl_unlock();
4880
4881 be_clear(adapter);
4882 }
4883
4884 static int be_resume(struct be_adapter *adapter)
4885 {
4886 struct net_device *netdev = adapter->netdev;
4887 int status;
4888
4889 status = be_setup(adapter);
4890 if (status)
4891 return status;
4892
4893 if (netif_running(netdev)) {
4894 status = be_open(netdev);
4895 if (status)
4896 return status;
4897 }
4898
4899 netif_device_attach(netdev);
4900
4901 return 0;
4902 }
4903
4904 static int be_err_recover(struct be_adapter *adapter)
4905 {
4906 int status;
4907
4908 /* Error recovery is supported only Lancer as of now */
4909 if (!lancer_chip(adapter))
4910 return -EIO;
4911
4912 /* Wait for adapter to reach quiescent state before
4913 * destroying queues
4914 */
4915 status = be_fw_wait_ready(adapter);
4916 if (status)
4917 goto err;
4918
4919 be_cleanup(adapter);
4920
4921 status = be_resume(adapter);
4922 if (status)
4923 goto err;
4924
4925 return 0;
4926 err:
4927 return status;
4928 }
4929
4930 static void be_err_detection_task(struct work_struct *work)
4931 {
4932 struct be_adapter *adapter =
4933 container_of(work, struct be_adapter,
4934 be_err_detection_work.work);
4935 struct device *dev = &adapter->pdev->dev;
4936 int recovery_status;
4937 int delay = ERR_DETECTION_DELAY;
4938
4939 be_detect_error(adapter);
4940
4941 if (be_check_error(adapter, BE_ERROR_HW))
4942 recovery_status = be_err_recover(adapter);
4943 else
4944 goto reschedule_task;
4945
4946 if (!recovery_status) {
4947 adapter->recovery_retries = 0;
4948 dev_info(dev, "Adapter recovery successful\n");
4949 goto reschedule_task;
4950 } else if (be_virtfn(adapter)) {
4951 /* For VFs, check if PF have allocated resources
4952 * every second.
4953 */
4954 dev_err(dev, "Re-trying adapter recovery\n");
4955 goto reschedule_task;
4956 } else if (adapter->recovery_retries++ <
4957 MAX_ERR_RECOVERY_RETRY_COUNT) {
4958 /* In case of another error during recovery, it takes 30 sec
4959 * for adapter to come out of error. Retry error recovery after
4960 * this time interval.
4961 */
4962 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
4963 delay = ERR_RECOVERY_RETRY_DELAY;
4964 goto reschedule_task;
4965 } else {
4966 dev_err(dev, "Adapter recovery failed\n");
4967 }
4968
4969 return;
4970 reschedule_task:
4971 be_schedule_err_detection(adapter, delay);
4972 }
4973
4974 static void be_log_sfp_info(struct be_adapter *adapter)
4975 {
4976 int status;
4977
4978 status = be_cmd_query_sfp_info(adapter);
4979 if (!status) {
4980 dev_err(&adapter->pdev->dev,
4981 "Port %c: %s Vendor: %s part no: %s",
4982 adapter->port_name,
4983 be_misconfig_evt_port_state[adapter->phy_state],
4984 adapter->phy.vendor_name,
4985 adapter->phy.vendor_pn);
4986 }
4987 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
4988 }
4989
4990 static void be_worker(struct work_struct *work)
4991 {
4992 struct be_adapter *adapter =
4993 container_of(work, struct be_adapter, work.work);
4994 struct be_rx_obj *rxo;
4995 int i;
4996
4997 /* when interrupts are not yet enabled, just reap any pending
4998 * mcc completions
4999 */
5000 if (!netif_running(adapter->netdev)) {
5001 local_bh_disable();
5002 be_process_mcc(adapter);
5003 local_bh_enable();
5004 goto reschedule;
5005 }
5006
5007 if (!adapter->stats_cmd_sent) {
5008 if (lancer_chip(adapter))
5009 lancer_cmd_get_pport_stats(adapter,
5010 &adapter->stats_cmd);
5011 else
5012 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5013 }
5014
5015 if (be_physfn(adapter) &&
5016 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5017 be_cmd_get_die_temperature(adapter);
5018
5019 for_all_rx_queues(adapter, rxo, i) {
5020 /* Replenish RX-queues starved due to memory
5021 * allocation failures.
5022 */
5023 if (rxo->rx_post_starved)
5024 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5025 }
5026
5027 /* EQ-delay update for Skyhawk is done while notifying EQ */
5028 if (!skyhawk_chip(adapter))
5029 be_eqd_update(adapter, false);
5030
5031 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5032 be_log_sfp_info(adapter);
5033
5034 reschedule:
5035 adapter->work_counter++;
5036 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
5037 }
5038
5039 static void be_unmap_pci_bars(struct be_adapter *adapter)
5040 {
5041 if (adapter->csr)
5042 pci_iounmap(adapter->pdev, adapter->csr);
5043 if (adapter->db)
5044 pci_iounmap(adapter->pdev, adapter->db);
5045 if (adapter->pcicfg && adapter->pcicfg_mapped)
5046 pci_iounmap(adapter->pdev, adapter->pcicfg);
5047 }
5048
5049 static int db_bar(struct be_adapter *adapter)
5050 {
5051 if (lancer_chip(adapter) || be_virtfn(adapter))
5052 return 0;
5053 else
5054 return 4;
5055 }
5056
5057 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5058 {
5059 if (skyhawk_chip(adapter)) {
5060 adapter->roce_db.size = 4096;
5061 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5062 db_bar(adapter));
5063 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5064 db_bar(adapter));
5065 }
5066 return 0;
5067 }
5068
5069 static int be_map_pci_bars(struct be_adapter *adapter)
5070 {
5071 struct pci_dev *pdev = adapter->pdev;
5072 u8 __iomem *addr;
5073 u32 sli_intf;
5074
5075 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5076 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5077 SLI_INTF_FAMILY_SHIFT;
5078 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5079
5080 if (BEx_chip(adapter) && be_physfn(adapter)) {
5081 adapter->csr = pci_iomap(pdev, 2, 0);
5082 if (!adapter->csr)
5083 return -ENOMEM;
5084 }
5085
5086 addr = pci_iomap(pdev, db_bar(adapter), 0);
5087 if (!addr)
5088 goto pci_map_err;
5089 adapter->db = addr;
5090
5091 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5092 if (be_physfn(adapter)) {
5093 /* PCICFG is the 2nd BAR in BE2 */
5094 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5095 if (!addr)
5096 goto pci_map_err;
5097 adapter->pcicfg = addr;
5098 adapter->pcicfg_mapped = true;
5099 } else {
5100 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5101 adapter->pcicfg_mapped = false;
5102 }
5103 }
5104
5105 be_roce_map_pci_bars(adapter);
5106 return 0;
5107
5108 pci_map_err:
5109 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5110 be_unmap_pci_bars(adapter);
5111 return -ENOMEM;
5112 }
5113
5114 static void be_drv_cleanup(struct be_adapter *adapter)
5115 {
5116 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5117 struct device *dev = &adapter->pdev->dev;
5118
5119 if (mem->va)
5120 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5121
5122 mem = &adapter->rx_filter;
5123 if (mem->va)
5124 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5125
5126 mem = &adapter->stats_cmd;
5127 if (mem->va)
5128 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5129 }
5130
5131 /* Allocate and initialize various fields in be_adapter struct */
5132 static int be_drv_init(struct be_adapter *adapter)
5133 {
5134 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5135 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5136 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5137 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5138 struct device *dev = &adapter->pdev->dev;
5139 int status = 0;
5140
5141 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5142 mbox_mem_alloc->va = dma_zalloc_coherent(dev, mbox_mem_alloc->size,
5143 &mbox_mem_alloc->dma,
5144 GFP_KERNEL);
5145 if (!mbox_mem_alloc->va)
5146 return -ENOMEM;
5147
5148 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5149 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5150 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5151
5152 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5153 rx_filter->va = dma_zalloc_coherent(dev, rx_filter->size,
5154 &rx_filter->dma, GFP_KERNEL);
5155 if (!rx_filter->va) {
5156 status = -ENOMEM;
5157 goto free_mbox;
5158 }
5159
5160 if (lancer_chip(adapter))
5161 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5162 else if (BE2_chip(adapter))
5163 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5164 else if (BE3_chip(adapter))
5165 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5166 else
5167 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5168 stats_cmd->va = dma_zalloc_coherent(dev, stats_cmd->size,
5169 &stats_cmd->dma, GFP_KERNEL);
5170 if (!stats_cmd->va) {
5171 status = -ENOMEM;
5172 goto free_rx_filter;
5173 }
5174
5175 mutex_init(&adapter->mbox_lock);
5176 spin_lock_init(&adapter->mcc_lock);
5177 spin_lock_init(&adapter->mcc_cq_lock);
5178 init_completion(&adapter->et_cmd_compl);
5179
5180 pci_save_state(adapter->pdev);
5181
5182 INIT_DELAYED_WORK(&adapter->work, be_worker);
5183 INIT_DELAYED_WORK(&adapter->be_err_detection_work,
5184 be_err_detection_task);
5185
5186 adapter->rx_fc = true;
5187 adapter->tx_fc = true;
5188
5189 /* Must be a power of 2 or else MODULO will BUG_ON */
5190 adapter->be_get_temp_freq = 64;
5191
5192 return 0;
5193
5194 free_rx_filter:
5195 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5196 free_mbox:
5197 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5198 mbox_mem_alloc->dma);
5199 return status;
5200 }
5201
5202 static void be_remove(struct pci_dev *pdev)
5203 {
5204 struct be_adapter *adapter = pci_get_drvdata(pdev);
5205
5206 if (!adapter)
5207 return;
5208
5209 be_roce_dev_remove(adapter);
5210 be_intr_set(adapter, false);
5211
5212 be_cancel_err_detection(adapter);
5213
5214 unregister_netdev(adapter->netdev);
5215
5216 be_clear(adapter);
5217
5218 /* tell fw we're done with firing cmds */
5219 be_cmd_fw_clean(adapter);
5220
5221 be_unmap_pci_bars(adapter);
5222 be_drv_cleanup(adapter);
5223
5224 pci_disable_pcie_error_reporting(pdev);
5225
5226 pci_release_regions(pdev);
5227 pci_disable_device(pdev);
5228
5229 free_netdev(adapter->netdev);
5230 }
5231
5232 static ssize_t be_hwmon_show_temp(struct device *dev,
5233 struct device_attribute *dev_attr,
5234 char *buf)
5235 {
5236 struct be_adapter *adapter = dev_get_drvdata(dev);
5237
5238 /* Unit: millidegree Celsius */
5239 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5240 return -EIO;
5241 else
5242 return sprintf(buf, "%u\n",
5243 adapter->hwmon_info.be_on_die_temp * 1000);
5244 }
5245
5246 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
5247 be_hwmon_show_temp, NULL, 1);
5248
5249 static struct attribute *be_hwmon_attrs[] = {
5250 &sensor_dev_attr_temp1_input.dev_attr.attr,
5251 NULL
5252 };
5253
5254 ATTRIBUTE_GROUPS(be_hwmon);
5255
5256 static char *mc_name(struct be_adapter *adapter)
5257 {
5258 char *str = ""; /* default */
5259
5260 switch (adapter->mc_type) {
5261 case UMC:
5262 str = "UMC";
5263 break;
5264 case FLEX10:
5265 str = "FLEX10";
5266 break;
5267 case vNIC1:
5268 str = "vNIC-1";
5269 break;
5270 case nPAR:
5271 str = "nPAR";
5272 break;
5273 case UFP:
5274 str = "UFP";
5275 break;
5276 case vNIC2:
5277 str = "vNIC-2";
5278 break;
5279 default:
5280 str = "";
5281 }
5282
5283 return str;
5284 }
5285
5286 static inline char *func_name(struct be_adapter *adapter)
5287 {
5288 return be_physfn(adapter) ? "PF" : "VF";
5289 }
5290
5291 static inline char *nic_name(struct pci_dev *pdev)
5292 {
5293 switch (pdev->device) {
5294 case OC_DEVICE_ID1:
5295 return OC_NAME;
5296 case OC_DEVICE_ID2:
5297 return OC_NAME_BE;
5298 case OC_DEVICE_ID3:
5299 case OC_DEVICE_ID4:
5300 return OC_NAME_LANCER;
5301 case BE_DEVICE_ID2:
5302 return BE3_NAME;
5303 case OC_DEVICE_ID5:
5304 case OC_DEVICE_ID6:
5305 return OC_NAME_SH;
5306 default:
5307 return BE_NAME;
5308 }
5309 }
5310
5311 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5312 {
5313 struct be_adapter *adapter;
5314 struct net_device *netdev;
5315 int status = 0;
5316
5317 dev_info(&pdev->dev, "%s version is %s\n", DRV_NAME, DRV_VER);
5318
5319 status = pci_enable_device(pdev);
5320 if (status)
5321 goto do_none;
5322
5323 status = pci_request_regions(pdev, DRV_NAME);
5324 if (status)
5325 goto disable_dev;
5326 pci_set_master(pdev);
5327
5328 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5329 if (!netdev) {
5330 status = -ENOMEM;
5331 goto rel_reg;
5332 }
5333 adapter = netdev_priv(netdev);
5334 adapter->pdev = pdev;
5335 pci_set_drvdata(pdev, adapter);
5336 adapter->netdev = netdev;
5337 SET_NETDEV_DEV(netdev, &pdev->dev);
5338
5339 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5340 if (!status) {
5341 netdev->features |= NETIF_F_HIGHDMA;
5342 } else {
5343 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
5344 if (status) {
5345 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5346 goto free_netdev;
5347 }
5348 }
5349
5350 status = pci_enable_pcie_error_reporting(pdev);
5351 if (!status)
5352 dev_info(&pdev->dev, "PCIe error reporting enabled\n");
5353
5354 status = be_map_pci_bars(adapter);
5355 if (status)
5356 goto free_netdev;
5357
5358 status = be_drv_init(adapter);
5359 if (status)
5360 goto unmap_bars;
5361
5362 status = be_setup(adapter);
5363 if (status)
5364 goto drv_cleanup;
5365
5366 be_netdev_init(netdev);
5367 status = register_netdev(netdev);
5368 if (status != 0)
5369 goto unsetup;
5370
5371 be_roce_dev_add(adapter);
5372
5373 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5374
5375 /* On Die temperature not supported for VF. */
5376 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5377 adapter->hwmon_info.hwmon_dev =
5378 devm_hwmon_device_register_with_groups(&pdev->dev,
5379 DRV_NAME,
5380 adapter,
5381 be_hwmon_groups);
5382 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5383 }
5384
5385 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5386 func_name(adapter), mc_name(adapter), adapter->port_name);
5387
5388 return 0;
5389
5390 unsetup:
5391 be_clear(adapter);
5392 drv_cleanup:
5393 be_drv_cleanup(adapter);
5394 unmap_bars:
5395 be_unmap_pci_bars(adapter);
5396 free_netdev:
5397 free_netdev(netdev);
5398 rel_reg:
5399 pci_release_regions(pdev);
5400 disable_dev:
5401 pci_disable_device(pdev);
5402 do_none:
5403 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5404 return status;
5405 }
5406
5407 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
5408 {
5409 struct be_adapter *adapter = pci_get_drvdata(pdev);
5410
5411 if (adapter->wol_en)
5412 be_setup_wol(adapter, true);
5413
5414 be_intr_set(adapter, false);
5415 be_cancel_err_detection(adapter);
5416
5417 be_cleanup(adapter);
5418
5419 pci_save_state(pdev);
5420 pci_disable_device(pdev);
5421 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5422 return 0;
5423 }
5424
5425 static int be_pci_resume(struct pci_dev *pdev)
5426 {
5427 struct be_adapter *adapter = pci_get_drvdata(pdev);
5428 int status = 0;
5429
5430 status = pci_enable_device(pdev);
5431 if (status)
5432 return status;
5433
5434 pci_restore_state(pdev);
5435
5436 status = be_resume(adapter);
5437 if (status)
5438 return status;
5439
5440 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5441
5442 if (adapter->wol_en)
5443 be_setup_wol(adapter, false);
5444
5445 return 0;
5446 }
5447
5448 /*
5449 * An FLR will stop BE from DMAing any data.
5450 */
5451 static void be_shutdown(struct pci_dev *pdev)
5452 {
5453 struct be_adapter *adapter = pci_get_drvdata(pdev);
5454
5455 if (!adapter)
5456 return;
5457
5458 be_roce_dev_shutdown(adapter);
5459 cancel_delayed_work_sync(&adapter->work);
5460 be_cancel_err_detection(adapter);
5461
5462 netif_device_detach(adapter->netdev);
5463
5464 be_cmd_reset_function(adapter);
5465
5466 pci_disable_device(pdev);
5467 }
5468
5469 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5470 pci_channel_state_t state)
5471 {
5472 struct be_adapter *adapter = pci_get_drvdata(pdev);
5473
5474 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5475
5476 be_roce_dev_remove(adapter);
5477
5478 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5479 be_set_error(adapter, BE_ERROR_EEH);
5480
5481 be_cancel_err_detection(adapter);
5482
5483 be_cleanup(adapter);
5484 }
5485
5486 if (state == pci_channel_io_perm_failure)
5487 return PCI_ERS_RESULT_DISCONNECT;
5488
5489 pci_disable_device(pdev);
5490
5491 /* The error could cause the FW to trigger a flash debug dump.
5492 * Resetting the card while flash dump is in progress
5493 * can cause it not to recover; wait for it to finish.
5494 * Wait only for first function as it is needed only once per
5495 * adapter.
5496 */
5497 if (pdev->devfn == 0)
5498 ssleep(30);
5499
5500 return PCI_ERS_RESULT_NEED_RESET;
5501 }
5502
5503 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5504 {
5505 struct be_adapter *adapter = pci_get_drvdata(pdev);
5506 int status;
5507
5508 dev_info(&adapter->pdev->dev, "EEH reset\n");
5509
5510 status = pci_enable_device(pdev);
5511 if (status)
5512 return PCI_ERS_RESULT_DISCONNECT;
5513
5514 pci_set_master(pdev);
5515 pci_restore_state(pdev);
5516
5517 /* Check if card is ok and fw is ready */
5518 dev_info(&adapter->pdev->dev,
5519 "Waiting for FW to be ready after EEH reset\n");
5520 status = be_fw_wait_ready(adapter);
5521 if (status)
5522 return PCI_ERS_RESULT_DISCONNECT;
5523
5524 pci_cleanup_aer_uncorrect_error_status(pdev);
5525 be_clear_error(adapter, BE_CLEAR_ALL);
5526 return PCI_ERS_RESULT_RECOVERED;
5527 }
5528
5529 static void be_eeh_resume(struct pci_dev *pdev)
5530 {
5531 int status = 0;
5532 struct be_adapter *adapter = pci_get_drvdata(pdev);
5533
5534 dev_info(&adapter->pdev->dev, "EEH resume\n");
5535
5536 pci_save_state(pdev);
5537
5538 status = be_resume(adapter);
5539 if (status)
5540 goto err;
5541
5542 be_roce_dev_add(adapter);
5543
5544 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5545 return;
5546 err:
5547 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
5548 }
5549
5550 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
5551 {
5552 struct be_adapter *adapter = pci_get_drvdata(pdev);
5553 u16 num_vf_qs;
5554 int status;
5555
5556 if (!num_vfs)
5557 be_vf_clear(adapter);
5558
5559 adapter->num_vfs = num_vfs;
5560
5561 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
5562 dev_warn(&pdev->dev,
5563 "Cannot disable VFs while they are assigned\n");
5564 return -EBUSY;
5565 }
5566
5567 /* When the HW is in SRIOV capable configuration, the PF-pool resources
5568 * are equally distributed across the max-number of VFs. The user may
5569 * request only a subset of the max-vfs to be enabled.
5570 * Based on num_vfs, redistribute the resources across num_vfs so that
5571 * each VF will have access to more number of resources.
5572 * This facility is not available in BE3 FW.
5573 * Also, this is done by FW in Lancer chip.
5574 */
5575 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
5576 num_vf_qs = be_calculate_vf_qs(adapter, adapter->num_vfs);
5577 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
5578 adapter->num_vfs, num_vf_qs);
5579 if (status)
5580 dev_err(&pdev->dev,
5581 "Failed to optimize SR-IOV resources\n");
5582 }
5583
5584 status = be_get_resources(adapter);
5585 if (status)
5586 return be_cmd_status(status);
5587
5588 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
5589 rtnl_lock();
5590 status = be_update_queues(adapter);
5591 rtnl_unlock();
5592 if (status)
5593 return be_cmd_status(status);
5594
5595 if (adapter->num_vfs)
5596 status = be_vf_setup(adapter);
5597
5598 if (!status)
5599 return adapter->num_vfs;
5600
5601 return 0;
5602 }
5603
5604 static const struct pci_error_handlers be_eeh_handlers = {
5605 .error_detected = be_eeh_err_detected,
5606 .slot_reset = be_eeh_reset,
5607 .resume = be_eeh_resume,
5608 };
5609
5610 static struct pci_driver be_driver = {
5611 .name = DRV_NAME,
5612 .id_table = be_dev_ids,
5613 .probe = be_probe,
5614 .remove = be_remove,
5615 .suspend = be_suspend,
5616 .resume = be_pci_resume,
5617 .shutdown = be_shutdown,
5618 .sriov_configure = be_pci_sriov_configure,
5619 .err_handler = &be_eeh_handlers
5620 };
5621
5622 static int __init be_init_module(void)
5623 {
5624 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
5625 rx_frag_size != 2048) {
5626 printk(KERN_WARNING DRV_NAME
5627 " : Module param rx_frag_size must be 2048/4096/8192."
5628 " Using 2048\n");
5629 rx_frag_size = 2048;
5630 }
5631
5632 if (num_vfs > 0) {
5633 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
5634 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
5635 }
5636
5637 return pci_register_driver(&be_driver);
5638 }
5639 module_init(be_init_module);
5640
5641 static void __exit be_exit_module(void)
5642 {
5643 pci_unregister_driver(&be_driver);
5644 }
5645 module_exit(be_exit_module);
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